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Korosi pada material stainless steel dalam lingkungan basa dan temperatur tinggi menjadi salah satu faktor yang memengaruhi umur pakai peralatan pada sistem netralisasi minyak sawit. Penelitian ini bertujuan menganalisis pengaruh temperatur dan kecepatan pengadukan terhadap laju korosi serta membandingkan ketahanan korosi baja tahan karat SS304 dan SS316 dalam larutan NaOH 1 M. Pengujian dilakukan menggunakan metode weight loss berdasarkan standar ASTM G31–72 selama 49 hari dengan variasi temperatur 70°C, 90°C, dan 110°C serta kecepatan pengadukan 100 rpm, 200 rpm, dan 300 rpm. Laju korosi dihitung berdasarkan kehilangan massa spesimen dan dianalisis menggunakan klasifikasi ketahanan korosi. Hasil penelitian menunjukkan bahwa peningkatan temperatur dan kecepatan pengadukan menyebabkan peningkatan laju korosi pada kedua material. Nilai laju korosi tertinggi diperoleh pada SS304 sebesar 0,0247 mm/tahun pada kondisi 110°C dan 300 rpm, sedangkan nilai terendah diperoleh pada SS316 sebesar 0,0124 mm/tahun pada kondisi 70°C dan 100 rpm. Secara umum, SS316 menunjukkan ketahanan korosi yang lebih baik dibandingkan SS304 karena kemampuan mempertahankan lapisan pasif yang lebih tinggi. Berdasarkan klasifikasi ketahanan korosi, sebagian besar kondisi pengujian berada pada kategori sangat baik sehingga kedua material masih layak digunakan pada sistem netralisasi minyak sawit, dengan SS316 lebih direkomendasikan untuk kondisi operasi yang lebih agresif.

Green transportation policy has increasingly been regarded as a cornerstone of urban mobility reform worldwide, yet its explicit orientation toward cyclist safety remains insufficiently developed. This paper examines how sustainable transportation management policies can be normatively designed to advance cyclist safety as a primary policy objective, not a secondary concern. Drawing on a qualitative literature review, the study explores the structural relationship between green transportation frameworks and the protection of cyclists within urban road systems. The discussion covers key policy dimensions including physical infrastructure standards, speed regulation, legal frameworks, public education, technological support systems, and inter-agency coordination. The study argues that a coherent policy architecture is essential for ensuring that the promotion of cycling as a low-emission mode is accompanied by robust safety provisions. Without this coherence, green transportation policy risks generating a structural contradiction between its environmental aspirations and its duty of care toward vulnerable road users. The findings affirm that cyclist safety and environmental sustainability are mutually reinforcing values that must be embedded together within any credible urban transportation governance framework.

The low thermal efficiency of Gas Power Plants (PLTG) due to exhaust gas heat loss drives the implementation of cogeneration at PLTGU Block II PT. PLN Indonesia Power UBP Semarang. This study analyzes the performance of the Gas Turbine Generator (GTG), combined cycle efficiency, and Exergy distribution using a 3-3-1 configuration. The research utilizes actual operational data from January 28, 2026, sampled at 10-minute intervals. Results indicate that cogeneration via a Heat Recovery Steam Generator (HRSG) significantly enhances plant efficiency. The GTG output ranged from 273–283 MW with an efficiency of 30.0–30.2%. Following combined cycle integration, system efficiency increased to 43.9–44.4%, a gain of approximately 14%, with a heat rate of 11,916–11,988 kJ/kWh. Exhaust heat of 665–713 MW was recovered to generate an additional 130 MW through the Steam Turbine Generator (STG). Exergy analysis reveals that the largest irreversibility occurs in the GTG combustion process (285 MW), followed by the HRSG (185 MW) and STG (49 MW).

This study aims to analyze the impact of the USD/CNY exchange rate and the Federal Reserve interest rate on the stock returns of Volkswagen AG. Volkswagen AG is chosen as the object of analysis because it is a multinational corporation with significant exposure to the Chinese market, making it highly sensitive to fluctuations in global economic conditions, particularly exchange rate movements and monetary policy changes. The study adopts a quantitative research approach using multiple linear regression analysis to examine the relationships between variables. The data used are monthly secondary data covering the period from 2017 to 2023, resulting in 84 observations. The dependent variable in this study is Volkswagen AG stock returns, while the independent variables consist of the USD/CNY exchange rate and the Federal Funds Rate. The empirical results show that the USD/CNY exchange rate has a negative and statistically significant effect on Volkswagen AG stock returns, indicating that currency depreciation or appreciation plays a crucial role in influencing investor sentiment and firm valuation. In contrast, the Federal Funds Rate does not show a statistically significant effect on stock returns during the observed period. However, the simultaneous test indicates that both variables jointly have a significant influence on Volkswagen AG stock returns. Overall, the findings suggest that exchange rate risk is more dominant than U.S. monetary policy in affecting the stock performance of Volkswagen AG over the study period.

The implementation of active learning models such as Problem-Based Learning (PBL) and Project-Based Learning (PjBL) at the junior high school level is often constrained by the complexity of instructional time management. This study aims to examine the role of the principal’s instructional leadership in addressing time management dilemmas in the implementation of active learning at SMP Negeri 6 Panyabungan. A qualitative approach with a descriptive method was employed in this study. Data were collected through non-participant observation and in-depth interviews with key informants, namely the school principal and an Islamic Religious Education (PAI) teacher selected as representatives of field conditions. The findings reveal three main results. First, teachers’ time management constraints are caused by weak control of learning activity transitions, noisy classroom conditions during group division, and low initial student learning readiness. Second, the principal implemented several concrete interventions, including the adoption of block scheduling, clinical supervision focused on classroom management, and the optimization of the Subject Teacher Forum (MGMP) or school learning community. Third, these interventions improved teachers’ instructional efficiency, strengthened classroom activity control, and created a more structured active learning process. However, sustainability challenges remain, particularly resistance from senior teachers who tend to prefer conventional teaching methods. This study concludes that adaptive and solution-oriented instructional leadership is a key factor in addressing the complexity of time management constraints in active learning implementation.

The increasing number of corruption cases involving School Operational Assistance (BOS) funds has become a serious challenge for the education sector in Indonesia. These cases not only undermine public trust in educational institutions but also hinder the achievement of equitable and quality education. This study aims to analyze the role of professional leadership in preventing and addressing the misuse of BOS funds within educational institutions. The research employs a qualitative approach through literature review and analysis of relevant regulations, scholarly publications, and documented corruption cases in the education sector. The findings indicate that professional leadership characterized by integrity, accountability, transparency, and strong ethical commitment plays a significant role in minimizing opportunities for corruption. Effective leaders are able to establish robust internal control systems, promote a culture of honesty, and ensure participatory financial management involving various stakeholders. Furthermore, continuous supervision and adherence to governance principles strengthen institutional resilience against financial misconduct. The study implies that strengthening leadership capacity and ethical values among educational leaders is essential for improving financial governance and fostering public confidence in educational management. Professional leadership is therefore a crucial factor in supporting clean, transparent, and sustainable education administration.

This study aims to analyze the factors influencing customer satisfaction at PT JNE Cabang Latta Ambon, focusing on five dimensions of service quality according to the SERVQUAL model: Tangibles, Reliability, Responsiveness, Assurance, and Empathy. Data were collected through a questionnaire distributed to 145 respondents using shipping services. The results of the analysis indicate that of the five dimensions, only the Empathy dimension has a positive and significant effect on customer satisfaction (β = 0.204; p = 0.048). The other variables, while showing positive effects, did not demonstrate statistical significance. The regression model developed was able to explain approximately 22.1% of the variation in customer satisfaction, emphasizing that there are other factors beyond the measured dimensions that also influence satisfaction. The F-test results show that, simultaneously, all five dimensions of service quality significantly affect customer satisfaction, supporting the SERVQUAL theory that highlights the importance of a multidimensional approach in service delivery. Practical implications of this study suggest that PT JNE Latta Ambon should focus more on enhancing empathy and responsiveness in service, while maintaining the quality of other aspects as a minimum standard. This research provides valuable insights for developing more effective customer-oriented service strategies and opens opportunities for further research in this field.

This study aims to analyze the effect of Digital Accounting Systems on Financial Decision Quality through Accounting Information Quality in modern companies. This research employed a quantitative explanatory approach using a survey design. Primary data were collected from 100 employees working in finance, accounting, and financial administration departments through purposive sampling and analyzed using Structural Equation Modeling–Partial Least Squares (SEM-PLS) with SmartPLS. The findings reveal that Digital Accounting Systems have a positive and significant effect on Accounting Information Quality, Accounting Information Quality has a positive and significant effect on Financial Decision Quality, and Digital Accounting Systems also directly improve Financial Decision Quality. The mediation test confirms that Accounting Information Quality partially mediates the relationship between Digital Accounting Systems and Financial Decision Quality. These results imply that companies should not only adopt digital accounting technology but also strengthen system integration, data validation, transaction standardization, and user competence to ensure that digital accounting systems produce accurate, timely, relevant, and useful information for effective financial decision-making.  

This study aims to examine the effect of Return on Assets (ROA), Debt to Equity Ratio (DER), and e-IPO regulation on the level of IPO underpricing on the Indonesia Stock Exchange during the 2021–2025 period. The research employs a causal quantitative approach using multiple linear regression analysis. Secondary data were collected from the prospectuses and financial statements of companies conducting Initial Public Offerings (IPOs).The results indicate that ROA does not have a significant effect on underpricing (significance value = 0.181). Similarly, DER is found to have no significant influence on underpricing (significance value = 0.268). The simultaneous test also shows a non-significant result, with an F-significance value of 0.120, suggesting that the independent variables collectively do not affect IPO underpricing. Furthermore, the coefficient of determination (R²) of 0.175 implies that only 17.5% of the variation in underpricing can be explained by the variables included in the model, while the remaining 82.5% is attributable to other factors outside the study, such as market sentiment, underwriter reputation, and oversubscription levels. These findings suggest that investors in the Indonesian IPO market tend to prioritize short-term capital gain opportunities rather than relying on firms’ financial fundamentals. Consequently, accounting-based indicators are not sufficiently influential in shaping stock prices during the first day of trading.

Shares trading below their intrinsic value present compelling return opportunities, particularly for long‑term investors. This study aims to assess the valuation of eight food‑and‑beverage issuers listed on the Indonesia Stock Exchange (IDX) over the 2021–2025 period using two market‑based valuation instruments: the Price to Earnings Ratio (PER) and the Price to Book Value (PBV). A quantitative descriptive design was employed, and a purposive sampling technique selected eight issuers: INDF, ICBP, MYOR, ROTI, GOOD, CLEO, CMRY, and CAMP. The sectoral benchmarks obtained were an average industry PER of 22.64 times and an average industry PBV of 3.45 times. Comparative analysis reveals that INDF (PER 7.38x; PBV 0.59x), ICBP (PER 17.60x; PBV 1.83x), ROTI (PER 18.86x; PBV 2.47x), and CAMP (PER 16.59x; PBV 1.78x) are undervalued relative to the industry average and therefore merit consideration as buy candidates, while MYOR, GOOD, CLEO, and CMRY are overvalued. INDF emerges as the most attractive investment candidate because its PBV remained consistently below 1.00 throughout the observation window, a condition recognized in value‑investing literature as deeply undervalued. The findings reinforce the argument that combining PER and PBV serves as a reliable tool for identifying high‑potential stocks from a fundamental analysis perspective.

Penelitian ini bertujuan untuk mengetahui pengaruh disiplin kerja dan lingkungan kerja terhadap kinerja karyawan pada PT Kangklin Jaya Bersih di Jakarta Selatan. Metode yang digunakan adalah kuantitatif. Penelitian ini populasi sebanyak 150 karyawan dan teknik pengambilan sampel menggunakan rumus slovin dengan eror 5% dan diperoleh sampel sebanyak 86 responden. Analisis data menggunakan uji validitas, uji realibilitas, uji asumsi klasik, analisis regresi, koefisien korelasi, koefisien determinasi, uji hipotesis. Hasil penelitian ini adalah Disiplin kerja berpengaruh signifikan terhadap kinerja karyawan dengan persamaan regrensi Y = 4,371 + 0,800 X1. Nilai koefisien korelasi sebesar 0,853 artinya kedua variabel memiliki tingkat hubungan yang sangat kuat. Nilai koefisien determinasi sebesar 72,7%. Uji hipotesis diperoleh hasil t hitung > t tabel atau (14,953 > 1,988). Hal tersebut juga diperkuat dengan nilai signifikansi < 0,05 atau (0,000 < 0,05). Lingkungan kerja berpengaruh signifikan terhadap kinerja karyawan dengan persamaan regrensi Y = 3,163 + 0,867 X2. Nilai koefisien korelasi sebesar 0,864 artinya kedua variabel memiliki tingkat hubungan yang sangat kuat. Nilai koefisien determinasi sebesar 74,6%. Uji hipotesis diperoleh hasil t hitung > t tabel atau (15,694 > 1,988). Hal tersebut diperkuat dengan nilai signifikansi < 0,05 atau (0,000 < 0,05). Disiplin kerja dan lingkungan  kerja secara simultan berpengaruh signifikan terhadap kinerja karyawan dengan persamaan regrensi Y = 1,468 + 0,390 X1 + 0,474 X2. Nilai koefisien korelasi diperoleh 0,887 artinya memiliki hubungan yang sangat kuat. Nilai koefisien determinasi sebesar 78,8% dan uji hipotesis diperoleh hasil F hitung > F tabel atau (153,833 > 3,11). Dengan demikian terbukti Ha3 diterima dan Ho3 ditolak. Hal ini juga diperkuat dengan nilai signifikansi < 0,05 (0,000 < 0,05). Artinya terdapat pengaruh yang signifikan antara disiplin kerja dan lingkungan kerja terhadap kinerja karyawan pada PT Kangklin Jaya Bersih Di Jakarta Selatan.

Baros District has the potential for creative economy-based Micro, Small, and Medium Enterprises (MSMEs) products that need to be strengthened, including products from the agricultural, livestock, crafts, food, and various other types of trade sectors. This study aims to analyze and assess the steps for developing creative economy-based MSMEs in Baros District, located in Serang Regency, Banten. The method applied is a qualitative approach through observation, interviews, document collection, and using a SWOT Matrix analysis to identify the strengths, weaknesses, opportunities, and challenges faced in developing creative economy-based MSMEs in Baros District, Serang Regency, Banten. Data sources used include the Head of Baros District, local village heads, academics, MSME actors, employees from the Serang Regency MSME Office, and MSME observers. This study lasted for one year. The appropriate strategy for developing MSMEs in Baros District is the SO (Growth) strategy, which utilizes existing strengths to increase competitiveness. The research revealed that MSMEs operating in the creative economy sector in Baros District still face various challenges in developing their businesses, such as limited capital, the use of simple production equipment, suboptimal marketing, a shortage of skilled labor, and limited use of technology and copyright registration for their products.

This study aims to analyze the effect of production costs and sales volume on profit with firm size as a moderating variable in food and beverage sector companies listed on the Indonesia Stock Exchange (IDX) during the 2020–2024 period. This study used a quantitative approach with an associative research design. The data used were secondary data obtained from annual financial statements of food and beverage companies listed on the IDX. The sampling technique used purposive sampling and obtained 110 observations. The analysis method employed was Moderated Regression Analysis (MRA) using IBM SPSS Statistics. The results of the study indicate that production costs do not have a significant effect on company profit. Meanwhile, sales volume has a positive and significant effect on profit. Firm size has a negative and significant effect on profit. Furthermore, firm size is unable to moderate the relationship between production costs and profit as well as the relationship between sales volume and profit. The coefficient of determination test shows that the independent and moderating variables are able to explain 56.8% of the variation in company profit, while the remaining 43.2% is explained by other variables outside the research model. This study implies that companies need to focus more on increasing sales volume and improving operational efficiency to enhance profitability.

This study analyzes the effect of pastry menu innovation and breakfast service on guest satisfaction at Hotel Indigo Seminyak Bali. The increasing competition in the hospitality industry requires hotels to continuously improve service quality and guest experience. Menu innovation and breakfast service are key factors that directly influence guest satisfaction, particularly through the overall dining experience during guests’ stay. This research used a quantitative descriptive approach with data collected through questionnaires, observation, and documentation from 120 respondents selected using purposive sampling. The data were analyzed using validity and reliability tests, classical assumption tests, multiple linear regression, t-test, and F-test with SPSS version 26. The results show that menu innovation has a positive and significant effect on guest satisfaction (p < 0.05). Breakfast service also has a positive and significant effect on guest satisfaction (p < 0.05). Simultaneously, both variables significantly influence guest satisfaction (F = 41.701). Among the two variables, breakfast service is the most dominant factor affecting guest satisfaction. These findings indicate that improving menu innovation and breakfast service can enhance guest satisfaction and strengthen competitiveness in the hospitality industry.

Latar belakang penelitian ini berakar pada fenomena kemajuan yang tidak merata di antara indikator pembangunan di Sumatera Utara, di mana Indeks Pembangunan Manusia (IPM), meskipun diklasifikasikan dalam kategori “tinggi”, belum secara konsisten berkontribusi pada penurunan tingkat pengangguran. Tujuan utama penelitian ini adalah untuk menguji pengaruh IMB, tingkat kemiskinan, dan tingkat pengangguran terhadap pertumbuhan ekonomi di Provinsi Sumatera Utara. Metode yang digunakan adalah pendekatan kuantitatif dengan analisis regresi linier berganda menggunakan data deret waktu dari tahun 2010 hingga 2025 yang bersumber dari BPS. Hasil penelitian menunjukkan bahwa secara simultan, IPM, kemiskinan, dan pengangguran secara signifikan mempengaruhi pertumbuhan ekonomi daerah. Secara parsial, IMB memiliki pengaruh positif dan signifikan, menunjukkan bahwa investasi dalam kualitas modal manusia meningkatkan produktivitas ekonomi. Sebaliknya, baik tingkat kemiskinan maupun tingkat pengangguran terbuka menunjukkan pengaruh negatif dan signifikan, yang menyiratkan bahwa peningkatan variabel-variabel ini cenderung menghambat ekspansi ekonomi. Lebih lanjut, variabel independen yang dimasukkan dalam model ini menjelaskan 49,49% variasi pertumbuhan ekonomi, sedangkan proporsi sisanya dijelaskan oleh faktor eksternal di luar cakupan penelitian ini. Hasil ini menyoroti pentingnya penerapan kebijakan yang menyelaraskan pengembangan sumber daya manusia dengan tuntutan pasar tenaga kerja untuk mengatasi masalah pengangguran terdidik.

This study was motivated by the gap between employee performance evaluations and the quality of health services at Dr. Adnaan WD Payakumbuh Regional General Hospital. Although the majority of employees received a “Good” performance rating through the e-Kinerja system and SKP, the public still complained about slow service, long lines, a lack of empathy among staff, and poor coordination between units. This study aims to analyze the implementation of performance management in relation to improvements in employee performance and the quality of healthcare services. The research method employs a descriptive qualitative approach, utilizing data collection techniques such as in-depth interviews, observations, and documentation involving hospital management, medical and non-medical staff, as well as patients. Data analysis utilizes the Miles and Huberman model through data reduction, data presentation, and drawing conclusions. The results indicate that the implementation of performance management is not yet optimal because it remains administratively oriented and has not been integrated with service quality. Issues were identified in the areas of human resources, facilities, coordination, supervision, as well as low levels of empathy and service responsiveness. The study concludes that the performance management system does not yet fully support improvements in the quality of healthcare services; therefore, an evaluation based on service outcomes and patient satisfaction is required.

This study is motivated by the importance of improving the performance of police officers as the frontline of public service, which is influenced by transformational leadership, organizational communication, and work discipline. In practice, variations in officer performance are still observed at police precincts under the Solok Police Department, as evidenced by differences in case resolution rates, service responsiveness, and the effectiveness of task execution. These conditions are suspected to be related to the suboptimal implementation of transformational leadership, organizational communication, and work discipline among officers. This study aims to analyze the influence of transformational leadership and organizational communication on police officer performance, as well as to test the role of work discipline as a moderating variable. The research method used is a quantitative approach with a field research design. The study population consisted of all 126 members of the police stations under the Solok Police Department, with a sample size of 124 respondents. Data collection was conducted by distributing questionnaires to police officers, which were then analyzed using the Partial Least Squares–Structural Equation Modeling (PLS-SEM) method. The results of the study indicate that transformational leadership has a positive and significant effect on member performance, with a coefficient of 0.754, a T-statistic of 3.550 (>1.96), and a P-value of 0.000 (<0.05); thus, the first hypothesis is accepted. Organizational communication has a negative and significant effect on performance with a coefficient of -0.615, a T-statistic of 2.509 (>1.96), and a P-value of 0.012 (<0.05). Work discipline does not moderate the effects of transformational leadership or organizational communication on performance, as both show insignificant results. In conclusion, improved police officer performance can be achieved through the implementation of effective transformational leadership and the strengthening of organizational communication.

Abstract. This study aims to determine the effect of Work-Life Imbalance on Customer Service Performance among banking employees who are also university students in Bandung City. Dual roles as employees and students have the potential to create an imbalance between work and academic life, which may affect the quality of customer service. This study employed a quantitative approach with a sample of 25 respondents consisting of active banking employees who are currently pursuing higher education. Data were collected through questionnaires and analyzed using simple linear regression with the assistance of IBM SPSS software. The results indicate that Work-Life Imbalance has a significant effect on Customer Service Performance. The coefficient of determination (R Square) value of 0.837 shows that the Work-Life Imbalance variable explains 83.7% of the variance in Customer Service Performance, while the remaining percentage is influenced by other variables outside the scope of this study. Therefore, banking companies are expected to provide appropriate support for employees who carry dual roles as workers and students.

Abstract. This study aims to analyze the influence of psychological safety on sustainable innovation with communication behavior as a mediating variable. The research design used a quantitative approach with a survey method on employees of PT Morich Indo Fashion. Sampling was conducted using the Slovin formula and obtained respondents who were analyzed using Partial Least Squares (PLS). The results showed that psychological safety has a positive effect on sustainable innovation and communication behavior. In addition, communication behavior also has a positive effect on sustainable innovation and mediates the relationship between psychological safety and sustainable innovation. These findings emphasize the importance of creating a psychologically safe climate and effective communication to encourage sustainable innovation in organizations.   Keywords: Psychological Safety; Communication Behavior; Sustainable Innovation; Partial Least Squares; Human Resource Management

Digital transformation in the tax sector is a strategy of the Direktorat Jendral Pajak (DJP) to improve the quality of service and taxpayer compliance. One form of this transformation is the implementation of the Coretax system as an integrated tax administration system that replaces the DJP Online system. This system change poses adaptation challenges for taxpayers, particularly in reporting Annual Tax Returns, which has the potential to affect the accuracy of tax payments. This study aims to analyze the optimization of the transition of Annual Tax Return reporting through the Coretax system on the accuracy of individual taxpayer payments at the North Sidoarjo Tax Office (KPP Pratama). The research method used is descriptive qualitative with data collection techniques such as observation of the Annual Tax Return reporting assistance process, documentation, and interviews with three taxpayers. The results show that the Coretax system is able to improve the accuracy of tax filing through data integration and automatic validation, thereby encouraging the accuracy of the amount and timeliness of tax payments. However, technical system constraints and limitations in taxpayer digital literacy were still encountered during the transition period. Assistance from tax officers and tax volunteers proved to be instrumental in helping taxpayers adapt to the Coretax system. This study concludes that optimizing the transition of the Coretax system requires a combination of system improvements and strengthening taxpayer education to achieve sustainable accuracy of tax payments.