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Modern infrastructure development often involves the use of mass concrete in large structural elements such as pile caps and foundations. However, massive concrete volumes trigger a significant temperature increase due to the heat of hydration that is difficult to dissipate, posing a risk of thermal stress and structural cracking. This study aims to analyze the temperature rise behavior of mass concrete and evaluate the effectiveness of combining chilled water and fly ash substitution in minimizing these thermal cracking risks.The research method employs a quantitative approach through laboratory testing at PT Adhimix RMC Plant Kaligawe. Specimen blocks measuring 40 x 40 x 100 cm were divided into three variations: normal concrete (BN), concrete with chilled water and 15% fly ash (BAF), and concrete with 25% fly ash (BF). Temperature was monitored using thermocouples at the core and surface for 14 days, then validated using the Portland Cement Association (PCA) formula. The results indicate that the integration of chilled water with 15% fly ash and the use of 25% fly ash significantly controlled extreme temperature surges at the 5th hour. The combination of chilled water and 15% fly ash produced the lowest core temperature of 37.3°C, far below the control concrete which reached 62.4°C. This proves that the combination of precooling methods and fly ash substitution is effective in reducing the heat of hydration during the early hardening period, although the use of 25% fly ash was found to be more stable in maintaining mass concrete temperature.

Sea Surface Temperature (SST) is an important parameter in oceanographic studies because it influences climate dynamics, ocean circulation, and marine ecosystems. Continuous monitoring of SST in open sea areas requires a reliable system capable of operating autonomously. This study develops a solar-powered ocean buoy designed to measure sea surface temperature while simultaneously evaluating the performance of a solar panel as the main energy source. The system uses a DS18B20 sensor to measure SST and an INA219 sensor to monitor the voltage, current, and power of the solar panel, while an ESP32 microcontroller functions as the central data processing unit. The results show that sea surface temperature tends to remain relatively stable with small daily variations, whereas the temperature and performance of the solar panel exhibit larger fluctuations due to direct exposure to solar radiation and changing weather conditions. Solar panel performance also shows significant variations in current and power depending on the intensity of sunlight. To analyze the influence of SST variations on solar panel performance, a statistical analysis using Analysis of Variance (ANOVA) was conducted. The ANOVA results, based on the calculated F-value and the significance value (p-value) at a confidence level of α = 0.05, indicate that SST variations have a significant effect on solar panel performance, demonstrating that the proposed solar-powered buoy system can operate autonomously and has potential for long-term SST monitoring in offshore areas.

This research is motivated by the importance tank cleaning process on tankers to prevent cargo contamination, maintain cargo quality, and ensure crew safety. MT. Marina Prosperity, a chemical/oil tanker, uses the Butterworth system as the primary method for tank cleaning at every cargo change. However, in practice, technical and operational constraints are still found that affect the results of tank cleaning. The research method used is descriptive qualitative with data collection techniques through direct observation on the ship, interviews with the Chief Officer and Boatswain, and documentation studies in the form of log books and SOPs. Data were analyzed by focusing on three aspects, namely work efficiency, work safety, and operational procedures for using Butterworth. The results show that the use of Butterworth can increase time and energy efficiency compared to manual methods, with an average cleaning time of 2–4 hours per tank depending on the type of cargo. From a safety aspect, Butterworth reduces the need for crew to enter the tank, thereby reducing the risk of exposure to chemicals and hazardous atmospheres. However, work effectiveness and safety are greatly influenced by the condition of the equipment, the stability of water pressure, and the crew's discipline in implementing the SOP. On several occasions, steps such as nozzle cleaning, manual mopping, and safety meetings were not consistently performed, resulting in residual load in certain areas. With routine equipment maintenance, close supervision, and ongoing crew training, Butterworth can be optimized to produce more effective, safe, and standards-compliant tank cleaning process.

The coal mining industry requires accurate stockpile volume measurements for inventory and production reporting. Conventional methods have limitations in accuracy, efficiency, and safety. This study compares the accuracy and efficiency of coal stockpile volume measurements using a Terrestrial Laser Scanner (TLS) Leica MS60 and an Unmanned Aerial Vehicle (UAV) DJI Matrice 4E, validated by the ASTM D6172-98 standard. Conducted on five Run of Mine (ROM) coal stockpiles covering 13,500 m² at PT XYZ, Lahat, South Sumatra, the TLS method used 43 scan positions, while the UAV employed 430 aerial images with specific flight parameters. Data were processed using Leica Infinity, Surpac, and Agisoft Metashape. The results showed volumes of 94,076 m³ (TLS) and 94,965 m³ (UAV), with a difference of 889 m³ (0.95%). Volume deviations ranged from 0.48% to 1.89%, with an average of 1.42%, all within the ASTM tolerance (<2%). Time efficiency analysis revealed that the UAV method required 200 minutes (3.33 hours), saving 63.3% (approximately 6.17 hours) compared to the TLS method (570 minutes). The largest efficiency gain occurred during field data acquisition, with an 85% reduction in time. This study confirms UAV photogrammetry as a valid, accurate, and efficient alternative for coal stockpile volume measurement in mining.

Air transportation plays an important role in supporting mobility, tourism, and emergency activities such as medical evacuation and search and rescue (SAR). One of the essential supporting facilities for helicopter operations is a heliport, which must meet safety standards, including an adequate lighting system. This study aims to design an LED floodlight installation system for the Main Helipad of Fly Bali Heliport based on the international standard ICAO Annex 14 Volume II, while considering the corrosive coastal environmental conditions. The research method used is an engineering design approach with quantitative analysis of illumination requirements and current carrying capacity (CCC). Data were obtained through literature studies based on ICAO, FAA, and CAP 437 standards, as well as field observations. The design process includes determining the number and placement of floodlights, technical specifications, and electrical installation systems, including cable and protection selection. The results show that the configuration of four LED floodlight units is capable of producing a minimum illumination of 10 lux evenly across the TLOF and FATO areas in accordance with ICAO standards without causing glare. The use of Avlite AV-HL-FL floodlights with IP66 protection is suitable for coastal environments. The electrical installation system using NYY 2×2.5 mm² cables and a 2 Ampere MCB ensures system safety and reliability. Therefore, this design can enhance heliport operational safety and support optimal night operations.

This study aims to analyze the technical and economic impact of power evacuation work on the 20 kV distribution system at PT PLN (Persero) UP3 East Bali. The main problem studied is the high losses and poor voltage profile on the downstream side of the Kintamani feeder. The method used is load flow simulation using ETAP software with a comparative approach to conditions before and after power evacuation. The results showed that the active losses decreased from 1.017 MW to 0.626 MW (efficiency 38.45%), accompanied by an increase in the end voltage from 16.32 kV to 18.72 kV and 19.38 kV, thus meeting the SPLN 1:1995 standard. The reduction in losses resulted in energy savings of 3,425,160 kWh/year. From the economic side, a payback period (PBP) of 1.40 years was obtained, which shows that the project is financially feasible. In addition, the improvement of network performance also contributes to the reliability of the distribution system and the continuity of the distribution of electrical energy to customers. Thus, power evacuation work has been proven to be effective in improving power distribution efficiency, improving voltage quality, and providing significant economic benefits.

This research aims to examine and analyze the phenomenon of speeding and illegal racing, which poses a significant threat to traffic safety within the legal jurisdiction of the Buleleng Resort Police (Polres Buleleng). The study employs empirical legal research methods, gathering primary data through observations and interviews with traffic police officers, alongside secondary data from legal literature and previous studies. The findings indicate that the speeding phenomenon in Buleleng is predominantly carried out by teenagers and young adults, often motivated by social media trends, peer pressure, and the search for identity. This reckless behavior leads to a high rate of traffic accidents, frequently resulting in severe injuries or fatalities. Furthermore, law enforcement efforts by Polres Buleleng face several challenges, including the high mobility of the perpetrators, lack of personnel during specific hours, and low legal awareness among the public. Preventive measures such as counseling in schools and repressive measures like electronic traffic law enforcement (E-TLE) and routine patrols need to be optimized. This study concludes that an integrated approach involving the police, educational institutions, and parents is crucial to mitigating the speeding phenomenon and ensuring traffic safety.

Stock market volatility represents a key indicator of financial market uncertainty, particularly in emerging economies where market structures are still evolving and are highly sensitive to global shocks. This study aims to analyze and compare the volatility dynamics of stock markets in four Asian emerging economies: Indonesia, India, Malaysia, and Thailand. The research employs a quantitative approach using daily stock index data from January 2011 to January 2026 obtained from Yahoo Finance. Stock returns are calculated using logarithmic transformation and analyzed using the Generalized Autoregressive Conditional Heteroskedasticity (GARCH(1,1)) model. Prior to model estimation, stationarity and ARCH effect tests are conducted to ensure the validity of volatility modeling. The empirical findings indicate that all return series exhibit non-normal distribution, strong volatility clustering, and significant ARCH effects. The estimation results show that both ARCH and GARCH parameters are statistically significant, with persistence levels close to unity across all markets, implying that volatility shocks tend to persist over a long period. These findings suggest that emerging stock markets in Asia are highly sensitive to external shocks and exhibit long-memory volatility behavior. The results provide important implications for investors and policymakers in designing effective risk management and market stabilization strategies.

Studies on relative clause embedded transformation sentences have been conducted extensively, but are still limited and have not paid attention to religious texts such as the translated text of the Qur'an. This study aims to analyze (1) the form of embedded transformation sentences, (2) the process of embedded transformation sentences, and (3) the rules of embedded transformation sentences found in the translated text of Surah Al-Mulk. The data used in this study are verses from Surah Al-Mulk that have a relative clause embedded transformation sentence pattern. The data collection method in this study uses documentation techniques, listening techniques, and note-taking techniques. The data obtained were analyzed using intralingual and extralingual matching methods. The results of this study found that there are 3 forms of relative clause embedded transformation sentences, namely the Embedded-Dense (S-R) form which consists of 6 verses, the Closed-Embedded form which consists of 2 verses, and the Embedded-Dense-Embedded (S-R-S) form which consists of 2 verses. Based on the position of the embedding, at the beginning of the sentence there is a sentence pattern of Embedded-Dense (S-R) and at the end of the sentence there is a Close-Embedded (R-S). Based on the rules of sentence transformation, there is a pattern of Embedded-Dense-Embedded (S-R-S) in complex sentences and a pattern of Embedded-Dense (S-R) in simple sentences.

This study aims to examine the relationship between family support and depression levels among the elderly in Pejuang Village, Bekasi City, through a descriptive-narrative literature review. The review analyzed relevant scientific articles discussing family support, social support, and depression in older adults. Literature was selected based on the suitability of the elderly population, the presence of family or social support variables, and the measurement of depressive symptoms or depression levels. The analysis compared each article’s objectives, research design, respondent characteristics, instruments, findings, and conclusions. The results indicate that most studies found a relationship between family support or social support and depression among the elderly. Adequate family support, including emotional, instrumental, informational, and appraisal support, helps older adults feel cared for, valued, secure, and better able to adapt to the aging process. Preliminary findings at the Elderly Posyandu in Pejuang Village also show variations in family support and depression levels among elderly participants. Conversely, limited family support may increase loneliness, psychological distress, and depressive symptoms. Therefore, family support functions as a protective factor in reducing depression risk among older adults. Strengthening the involvement of families, health workers, and elderly posyandu cadres is necessary as a promotive and preventive strategy to maintain psychological well-being through education, early detection, and sustainable community-based assistance for vulnerable elderly groups living in community and family environments.

Hypertension is a major public health concern with a high prevalence and a significant risk of complications if left uncontrolled. Effective management requires not only pharmacological treatment but also non-pharmacological approaches and active family involvement. One potential non-pharmacological therapy is the use of celery (Apium graveolens), which is believed to lower blood pressure. This study aimed to evaluate the effectiveness of family education combined with celery decoction administration in reducing blood pressure among patients with hypertension. A descriptive case study design was employed using a family nursing care approach over three home visits, each lasting 30–45 minutes. The intervention included health education on hypertension and a demonstration of how to prepare and administer celery decoction, which was consumed twice daily. Data were collected through interviews, observation, and blood pressure measurements. The results showed a reduction in blood pressure from 159/90 mmHg to 130/80 mmHg, along with a decrease in symptoms such as headaches and dizziness. In addition, there was an improvement in family knowledge, caregiving skills, and the ability to modify the home environment. In conclusion, family-based education combined with the administration of celery decoction appears to be effective in reducing blood pressure and enhancing the family’s role in managing hypertension.

This study aims to analyze the digital communication strategy of Arrahmah Tour in building pilgrims’ trust through digital media. This research employs a qualitative approach with a case study method. Data were collected through interviews, observation of the company’s official digital media, particularly the website Arrahmah Tour, and documentation of various digital contents such as company profiles, travel packages, pilgrims’ testimonials, and service information. Data analysis was conducted using a descriptive-qualitative technique focusing on identifying patterns of digital communication strategies in building trust. The findings show that Arrahmah Tour implements a digital communication strategy focused on building digital trust through three main elements: information transparency, social proof, and communication consistency. Digital media functions not only as a promotional tool but also as an organizational legitimacy instrument and a mechanism for reducing perceived risk among prospective pilgrims. The company’s website serves as an information hub as well as a primary reference in the decision-making process. Thus, the implemented digital communication strategy significantly contributes to building pilgrims’ trust in the context of high uncertainty within the Umrah travel industry.

This study is motivated by the growing public demand for reliable and high-quality public transportation services such as the Trans Solo Bus on corridor 4. The purpose of this research is to analyze the influence of Facilities, Innovation, and Service Quality on User Interest, both partially and simultaneously. This study employs a quantitative method with a sample of 100 respondents who are users of the Trans Solo Bus on corridor 4. Data were collected through questionnaires and analyzed using IBM SPSS Statistics through several tests, including validity, reliability, normality, multicollinearity, heteroscedasticity, multiple linear regression, t-test, F-test, and coefficient of determination (R²). The results revealed that Facilities, Innovation, and Service Quality significantly influence User Interest, either individually or simultaneously. These findings imply that improving facilities, implementing continuous innovation, and ensuring high service quality can increase public interest in using Trans Solo Bus services, thus supporting the development of sustainable urban transportation.

One of the most actively traded and liquid stock groups in the capital market is the LQ45 index, which consistently attracts investor attention due to its strong market capitalization and transaction volume. This study aims to analyze the influence of financial performance and financial management strategies on firm value among companies listed in the LQ45 index on the Indonesia Stock Exchange during the 2018–2022 period. The study population consisted of 73 LQ45-indexed companies, with purposive sampling used to select 23 companies that met the research criteria. This research employed a quantitative approach using path analysis to examine both direct and indirect relationships among variables. The findings indicate that profitability and leverage have a positive and significant effect on firm value. In addition, profitability and leverage also positively influence firm size, indicating that companies with stronger profitability and effective debt management tend to expand their operational scale. However, firm size does not significantly affect firm value and is unable to mediate the relationship between profitability, leverage, and firm value. These results suggest that investors place greater emphasis on profitability and leverage indicators than company size when evaluating firm value in LQ45 companies. Therefore, effective financial performance remains the primary factor in enhancing corporate value and investor confidence.

Taste.ki MSME, a café in Makassar, faces challenges from intense competition and an suboptimal digital marketing strategy, relying only on Instagram without a consistent content strategy. This study aims to design a website integrated with Instagram to strengthen Brand Awareness and increase sales. The research employed the Four-D method (Define, Design, Develop, Disseminate), and the website was designed using the Wordpress CMS. The results indicate that the website design was successfully implemented. The integration of the website with Instagram significantly improved Brand Awareness, evidenced by a Brand Recognition achievement of 88% and Brand Recall of 94%. Furthermore, this digital strategy positively impacted Taste.ki MSME's sales, showing an increase of 79.20%. This improvement confirms the crucial role of a website as an information hub and conversion channel in an MSME's digital marketing strategy to compete effectively in the digital era.

This study aims to analyze the legal protection of women's inheritance rights from the perspective of Indonesian civil law. The problems studied focused on the position of women as heirs and the extent to which the legal system provides guarantees of justice and equality. The research method used is normative juridical with a legislative and conceptual approach. Data was obtained through a literature study of legal regulations, doctrines, and court decisions relevant to inheritance issues. The results of the study show that normatively, civil law provides equal recognition of women's inheritance rights, especially in the Civil Code. However, in practice, there are still obstacles influenced by patriarchal culture and customary law that tend to place women in subordinate positions. This condition causes women to often experience difficulties in claiming or obtaining the proper share of inheritance. Therefore, it is necessary to strengthen regulations, harmonize national laws with the value of gender equality, and increase public legal awareness to ensure effective and fair protection for women in obtaining their inheritance rights.

This study aims to identify and explain language errors in a scientific journal article entitled "Analysis of Language Errors in Expository Texts on the Digital Platform 'Ruangguru', August 2024 Edition as a Reading Resource for High School Students," published in the Semantik Journal, Issue 3, Number 4. The method applied in this study is descriptive qualitative using a literature study approach. For data collection, observation and recording techniques were used, while data analysis was carried out using the content analysis method. The findings of this study revealed 27 language errors divided into five categories, including 12 spelling errors (typos) (44.4%), 5 word choice errors (18.5%), 4 punctuation errors (14.8%), as well as ineffective sentence structure errors and errors in the bibliography (3 each) (11.1%). The causes of these errors include minimal editing process, inadequate understanding of PUEBI (Indonesian Standards for Ethics and Education), and inaccuracies from the author. This study shows that articles analyzing language errors still contain errors, so there is a need for improvements in the quality of editing by the author and the journal's editorial team.

Smoking behavior is a modifiable risk factor for hypertension, with hypertension prevalence generally increasing alongside higher cigarette consumption and longer smoking duration. Research on hypertension prevalence among productive-age smokers in Indonesia using national-scale data remains scarce in Indonesian publications. This study aims to analyze factors influencing hypertension among productive-age smokers in Indonesia in 2015, utilizing data from the Indonesia Family Life Survey (IFLS) 2015. The research employs a quantitative design with an analytical observational approach using a cross-sectional study. The sample comprises 10,677 productive-age smokers in Indonesia, selected via multi-stage random sampling across 32 provinces in 2015. Independent variables include age, gender, employment status, work region, cigarettes smoked, smoking duration, and daily cigarette consumption, while the dependent variable is hypertension. Hypertension prevalence among productive-age smokers in Indonesia in 2015 reached 8.53%, with significant predictors including age ≥36 years, female gender, employment status, smoking intensity of 21–30 or >31 cigarettes/day, and smoking duration >16 years—reflecting multifactorial interactions of biological, behavioral, and socioeconomic factors. Accordingly, recommendations include routine screening at primary health centers for at-risk groups, tobacco control programs based on dose-duration, economic empowerment for the unemployed, intensive screening with lifestyle counseling by healthcare providers, and longitudinal designs for future causal studies.

Land tenure through certificates as valid proof of rights had been recognized, yet in practice damaged certificates still caused administrative obstacles at the BPN of Tabanan Regency. The objective of this research was to analyze the mechanism of replacing damaged Certificates of Ownership and to identify the inhibiting factors in the process. This research used an empirical legal method (socio-legal research) with statutory, conceptual, and factual approaches. Data were collected through interviews with officials at the Tabanan Land Office and literature studies from legal documents and academic sources. The findings showed that the replacement mechanism started with application submission, data matching with the land book, a 30-day public announcement period, field verification including re-measurement if physical data could not be read, and issuance of a replacement certificate directed toward an electronic system. The study also found that the main inhibiting factors included administrative constraints, incomplete documents, unclear legal subjects, potential land disputes, low public understanding, and limited digitalization. These findings indicated that although the mechanism had been regulated, its implementation still faced obstacles affecting legal certainty and service effectiveness. This research implied the need to improve services, legal awareness, and digital transformation.

This study examines the legal accountability of the Board of Directors of PT. Humpuss Intermoda Transportasi in relation to ultra vires conduct, with particular reference to Court Ruling No. 439/Pdt.G/2011/PN.JKT.SEL. Employing a normative-doctrinal legal methodology supported by statutory and comparative analyses, this research investigates the standard of director liability within Indonesian company law and contrasts it with the English ultra vires framework. Indonesia's Limited Liability Company Act (Law No. 40 of 2007) establishes that directors bear full accountability for corporate actions performed within the boundaries set by the Articles of Association and prevailing regulations; any action exceeding such boundaries constitutes an ultra vires act that is void ab initio and non-binding upon the company. Research findings reveal that the directors of PT. Humpuss Intermoda Transportasi overstepped their authority when they issued the Linsen Corporate Guarantee and the Nelson Corporate Guarantee without the mandatory written consent of the Board of Commissioners, thereby contravening Article 13(1) of the Company's Articles of Association and Articles 92(1) and 97(2) of Law No. 40 of 2007. The South Jakarta District Court consequently imposed joint and several personal liability on the said directors. A comparative review discloses that Indonesia maintains a more rigid application of the ultra vires doctrine relative to England, whose Companies Act 2006 introduced a good-faith-based flexibility that effectively confines ultra vires liability to situations where directors act dishonestly and cause demonstrable corporate harm. Notwithstanding this divergence, the directors' actions in the present case would equally qualify as ultra vires under English law given the verified prejudice inflicted on the company.