Publication Search

This study compared the performance of SARIMA and Prophet models in forecasting daily close prices of three major Indonesian banking stocks: BBCA, BBRI, and BMRI, using data from January 2020 to March 2026. Data were retrieved via the yfinance library, preprocessed, and split into 80% training and 20% testing sets. SARIMA modeling followed the Box-Jenkins procedure, while Prophet was configured with a Lag-1 regressor, weekly and monthly seasonality, Indonesian public holidays, and log transformation. Model performance was evaluated using MAPE, MSE, and Dstat metrics. Results showed that SARIMA outperformed Prophet in MAPE and MSE across all six stock-variable combinations, with MAPE values ranging from 1.3368% to 1.9386% for SARIMA and 1.5992% to 2.2300% for Prophet. However, Prophet demonstrated marginally higher Dstat values in several series. Both models achieved "Very Good" forecasting accuracy. A web-based forecasting system was also developed using Streamlit to make the models accessible to investors.

Manual server administration introduces operational inefficiencies and elevated risks of human error. This study evaluated the effectiveness of server administration automation utilizing Shell scripting and Cron Job scheduling within a virtualized Linux Debian 12 environment. An experimental method compared manual execution against automated procesases based on execution duration, resource consumption, and error reduction. The findings indicated that the automated system executed backup routines within 0.043 seconds, demonstrating a 95.16% time efficiency increase compared to the manual baseline of 0.89 seconds. Automated monitoring maintained a stable resource allocation, utilizing 275 megabytes of memory and low central processing unit usage between 0.0% and 1.3%. Furthermore, automation reduced operational failures to 0%. In conclusion, this integration significantly optimizes server reliability.

This review explores the integration of artificial intelligence in higher education, focusing on its impact on teaching and learning, barriers to adoption, and strategies for sustainable implementation. A narrative review of peer-reviewed literature published from 2023 to 2026 was conducted, emphasizing student and educator perspectives. The findings show that AI improves learning efficiency, supports personalized learning, and enhances academic writing, while also introducing concerns related to academic integrity, algorithmic bias, AI colonialism, and limited formal training. The review suggests that successful adoption depends on institutional support, AI literacy, ethical policy frameworks, and cross-disciplinary professional development. Generative AI should serve as an enhancer rather than a replacement in human-centered education.

Local wisdom, particularly traditional snacks, constitutes an essential part of national cultural identity that needs to be introduced from an early age. However, observations at SDN 1 Tanggungharjo revealed that students' understanding of traditional snacks remains low, compounded by a lack of contextual and engaging visual learning media. This study aims to design an illustrated book titled "Belajar Jajanan Tradisional" (Learning Traditional Snacks) as a local wisdom-based educational medium for grades 3–6 students at SDN 1 Tanggungharjo. The Design Thinking method was employed through five stages: Empathize, Define, Ideate, Prototype, and Test. Data were collected through direct observation, teacher interviews, and student questionnaires. The outcome is a 20-page digital illustrated book in A5 PDF format covering four traditional snacks — klepon, dadar gulung, apem, and kue lapis — with content encompassing their origins, philosophy, cultural values, ingredients, and preparation processes. The applied design elements include character personification, vector cartoon style, bright color palettes based on the snacks' natural colors, rounded sans-serif typography, and a charactercentered layout tailored to the cognitive characteristics of students aged 9–12 years. Trial results demonstrated that the illustrated book effectively enhanced students' understanding of and interest in traditional snacks, while receiving positive feedback from teachers as a contextual and meaningful supplementary medium for thematic learning. 

Image Quality Assessment has become an important research area in computer vision due to the increasing use of digital imaging in medical, industrial, and remote sensing applications. This study conducted a Systematic Literature Review (SLR) using articles retrieved exclusively from the Scopus database. A total of fifteen Scopus-indexed articles were selected through the PRISMA process consisting of identification, screening, eligibility, and inclusion stages. The findings indicated that convolutional neural networks, transformer architectures, and no-reference approaches dominated recent studies because of their ability to capture complex visual features and improve evaluation accuracy. The application domain strongly influenced method selection, particularly in medical imaging, industrial quality control, and remote sensing. Deep learning methods achieved high performance but required large datasets and high computational resources. Overall, recent research trends shifted from traditional image enhancement toward artificial intelligence-based quality evaluation.

This study aimed to develop a profile video as a promotional and informational medium for State Elementary School 3 Bentangan and to evaluate its feasibility level. The problem was initiated by the school's continuous reliance on print media, such as brochures, and the urgent need for digital content suitable for social media platforms to reach the wider community. To address this, the Research and Development method was employed, utilizing seven stages of development procedures. Data were collected through questionnaires and analyzed using a Likert Scale. The profile video development was validated by media and material experts, and subsequently tested by users. The research results indicated that the developed profile video was highly feasible for use as a promotional and informational medium, based on the validation tests conducted by the media experts, material experts, and users.

concern for pet owners. Consequently, cat owners seek equipment that can support and simplify their daily pet care activities. However, the busy schedules of many cat owners often make it difficult for them to provide consistent care, raising concerns about the neglect of their pets. To address this issue, this study developed an automatic cat feeding system for a cat enclosure using an experimental research method. The proposed system utilizes a load cell sensor, a Real-Time Clock (RTC), a servo motor, and an ATmega16 microcontroller. The load cell sensor is employed to determine the appropriate food portion based on the cat's nutritional requirements, while the RTC controls the feeding schedule by dispensing food twice a day at predetermined times. The experimental results demonstrate that the system was successfully implemented, with the load cell measurement exhibiting an error rate of 10.71% relative to the predefined set point. Furthermore, the servo motor effectively controlled the valve mechanism, achieving a maximum opening angle of 85 degrees. Overall, the developed system performed reliably and met the expected operational objectives..

The rapid growth of Solar Power Plant (PLTS) installations in Indonesia faces efficiency challenges due to the continuously changing position of the sun. Fixed panel systems cannot absorb solar radiation optimally throughout the day. This study aims to evaluate and compare the efficiency of various solar tracking system methods developed over the last five years using a simple literature review approach. The research method was conducted by collecting, screening, and synthesizing secondary data from five reputable scientific journals using a synthesis matrix. The review results indicate that single-axis tracking systems increase power efficiency by 15% to 24.5%. Meanwhile, dual-axis systems achieve higher efficiency, ranging from 30% to 35%, by tracking both horizontal and vertical solar movements. In terms of control systems, astronomical algorithms are found to be more reliable in cloudy weather conditions than pure light sensors. However, the internal power consumption of the actuator motors remains a critical factor that can reduce the system's net energy gain. The implication of this study emphasizes the importance of shifting future research focus toward energy-saving algorithm optimization to maximize net power yield in dynamic solar panel implementations.

Breastfeeding should ideally begin immediately after birth and be provided exclusively for the first six months of life. However, in 2022, the coverage of exclusive breastfeeding among infants aged 0–6 months in Jayapura was only 21%, which remains far below the national target of 45%. Various factors contribute to this low coverage, including limited knowledge, lack of experience, insufficient support systems, and concerns among adolescent mothers that breastfeeding may interfere with their education or employment. This study aimed to explore the breastfeeding experiences of adolescent mothers in Wahno Village, Abepura Subdistrict. A qualitative research design was used, with structured interviews conducted using a questionnaire. The results indicated that the initiation of exclusive breastfeeding among adolescent mothers was generally positive. Participants reported mixed emotional experiences, including feelings of happiness, pride, stress, and discomfort. Family support, particularly from husbands, played an important role in sustaining breastfeeding practices. Most respondents also demonstrated adequate knowledge regarding how to manage breastfeeding-related challenges. Overall, adolescent mothers in Wahno Village showed a reasonable level of understanding and commitment toward exclusive breastfeeding. Continued education and support are recommended to further strengthen breastfeeding practices among adolescent mothers and their families.

Digital technology advancements have greatly changed how small businesses manage their finances. This change is not only about recording transactions, but it also affects financial control, report preparation, and business decision making. Accounting Information System (SIA) came about as a solution to help small and medium businesses easily, organize, and accurately record their finances, as well as provide reliable financial information. This study aims to explain the role of the Accounting Information System in making it easier to manage the finances of small and medium businesses in the digital age, the benefits gained from using it, and the challenges faced during its implementation. The method used in this research is a literature review, which involves examining books, journals, and other related scientific publications, followed by analysis using a descriptive qualitative approach. Research findings show that using a digital-based Accounting Information System can improve business efficiency, speed up financial reporting, increase transparency, and make it easier for small and medium-sized businesses to get funding access. However, the implementation of the Accounting Information System still faces challenges such as a lack of technological understanding, limited infrastructure, and high implementation costs. Therefore, collaboration and support from various parties are needed to ensure the accounting information system is implemented effectively and sustainably in small and medium businesses.

Vocational high school graduates are expected to master not only technical competencies but also interpersonal skills that support their readiness for the workplace. Field observations at SMK Pasundan 1 Bandung indicate that students in the Online Business and Retail (Bisnis Daring dan Ritel) program still show a low level of assertive communication, evidenced by their difficulty in expressing opinions confidently, refusing requests politely, and handling direct interaction with customers. This community service program (Program Kemitraan Masyarakat/PKM) was designed to develop students' assertive communication skills through the role-play method. The program consists of five stages: needs analysis, development of training materials and role-play scenarios, training and practice, evaluation and feedback, and continued mentoring. Students are placed in simulated roles such as seller, buyer, and observer in scenarios involving customer service, complaint handling, price negotiation, and teamwork. The information-dissemination approach combines material delivery, discussion, hands-on practice, and technical guidance. The program is expected to increase students' understanding of assertive communication concepts, strengthen their interpersonal communication skills, and provide an applied learning experience relevant to the demands of the retail and customer-service industry. The expected output of this activity is a scientific article published in a nationally accredited (Sinta) journal.

Assertive communication is a core competency for vocational high school (SMK) students, particularly those majoring in Online Business and Retail, whose future work demands strong interpersonal skills in customer service, negotiation, and teamwork. Classroom instruction in Indonesian vocational schools, however, still tends to privilege cognitive content over practical, contextual communication training. This study examines the effect of the role-playing technique on the assertive communication ability of twelfth-grade Online Business and Retail students at SMK Pasundan 1 Bandung. A quantitative survey approach is employed, with role playing—operationalized through three dimensions (role taking, role marking, and role negotiation) adapted from Zaini (2008)—as the independent variable, and assertive communication—operationalized through five dimensions adapted from Albert and Emmons (2001)—as the dependent variable. Given a population of 36 students, a saturated (census) sampling technique is used, so all members of the population serve as respondents. Data will be collected through a Likert-scale questionnaire and analyzed using path analysis with the assistance of SPSS, examining both the simultaneous effect of role playing on assertive communication and the partial effects of its three dimensions. The study is grounded in Bandura's (1977) Social Learning Theory, which posits that behavior is acquired through observation, modeling, and reinforcement. The anticipated outcome is empirical evidence on the effectiveness of role playing in strengthening assertive communication, together with practical recommendations for teachers and schools seeking to design more participatory, work-relevant instructional strategies.

This study aims to examine the effect of Social Media Brand Engagement, Brand Trust, and Customer Satisfaction on Nescafé Brand Loyalty. A quantitative approach was employed using a explanatory research. Data were collected through questionnaires distributed to Nescafé consumers and analyzed using multiple linear regression with SPSS. The results indicate that Social Media Brand Engagement has a positive and significant effect on Nescafé Brand Loyalty, with a significance value of 0.001 (< 0.05). Customer Satisfaction also has a positive and significant effect on Nescafé Brand Loyalty, with a significance value of 0.001 (< 0.05). In contrast, Brand Trust does not have a significant effect on Nescafé Brand Loyalty, as indicated by a significance value of 0.506 (> 0.05). The coefficient of determination (R²) shows that Social Media Brand Engagement, Brand Trust, and Customer Satisfaction explain 61.2% of the variation in Nescafé Brand Loyalty, while the remaining 38.8% is influenced by other factors not included in this study. The findings suggest that consumer engagement on social media and customer satisfaction play important roles in strengthening brand loyalty toward Nescafé. Therefore, companies should focus on improving social media engagement strategies and maintaining customer satisfaction to enhance consumer loyalty.

Partographs are an important instrument in labor monitoring that functions to detect complications early, monitor labor progress, and support appropriate clinical decision-making. However, incomplete filling of partographs is still a problem in various health service facilities and has the potential to affect the quality of midwifery services. This study aims to find out the completeness of filling in the partograph in childbirth monitoring at the Wajo Health Center UPTD Baubau City. This study uses a quantitative method with a descriptive design. The research population is all partograph documents for the period November 2025 to March 2026 as many as 40 documents. The sampling technique used total sampling and obtained 32 documents that met the research criteria. Data were collected using an observation checklist sheet and analyzed univariately through frequency and percentage distributions. The results showed that as many as 28 documents (87.5%) had not been fully filled out and only 4 documents (12.5%) had been filled in completely. The components with the highest level of completeness were uterine contractions (100%), drugs and fluids (96.9%), and labor progress (93.8%). Meanwhile, the components of maternal information (12.5%) and maternal condition (31.3%) had the lowest level of completeness. Most of the filling of partographs at the Wajo Health Center UPTD still does not meet the completeness standards. It is necessary to strengthen supervision, training, and periodic monitoring to improve the quality of childbirth documentation and support the safety of mothers and babies

This study aims to analyze the influence of work motivation, transformational leadership style, and career development on employee performance through job satisfaction at the Dinas PUPR Kabupaten Kutai Timur. This research uses quantitative explanatory method with SEM-PLS (Structural Equation Modeling - Partial Least Squares) analysis. The population consists of 120 employees with a sample of 93 respondents determined using the Slovin formula with 5% margin of error and simple random sampling technique. Data were collected using a Likert scale questionnaire (1-5). The results show that career development has a significant positive effect on job satisfaction (original sample 0.574, p-value 0.000), and transformational leadership style has a significant positive effect on employee performance (original sample 0.540, p-value 0.000). However, work motivation and transformational leadership style do not significantly affect job satisfaction, and work motivation and career development do not directly affect employee performance. Furthermore, job satisfaction fails to mediate the relationship between work motivation, transformational leadership style, and career development on employee performance. The R-Square values indicate that the predictor variables explain 40.4% of job satisfaction variance and 40.1% of employee performance variance.

This study aims to analyze the effect of career development and organizational culture on employee productivity through job satisfaction at the Office of Community and Village Empowerment (DPMD) in East Kutai Regency. The research employs a quantitative explanatory approach using Partial Least Squares Structural Equation Modeling (PLS-SEM) with SmartPLS software. Total sampling was applied, involving all 90 employees of the office as respondents. Data were collected through questionnaires with Likert scale measurements. The results demonstrate that career development has a significant positive effect on job satisfaction (coefficient = 0.295, T = 2.532, p = 0.011), and organizational culture has a significant positive effect on job satisfaction (coefficient = 0.441, T = 4.071, p = 0.000). However, career development, organizational culture, and job satisfaction do not have a significant direct effect on employee productivity (H3 through H7 rejected). The coefficient of determination for job satisfaction is 43.1%, indicating that both independent variables explain 43.1% of job satisfaction variance. These findings suggest that although career development and organizational culture successfully improve job satisfaction, mechanisms beyond satisfaction are needed to translate that satisfaction into measurable productivity at DPMD.

The development of digital financial technology has accelerated the transition from cash-based to cashless payment systems across various economic sectors, including traditional markets. One of the most widely adopted innovations is the Quick Response Code Indonesian Standard (QRIS), which offers convenience, speed, and security in financial transactions. This study aims to analyze the role of digital financial literacy in supporting the utilization of QRIS and its implications for the profitability and business sustainability of traditional market traders in Surabaya. The study employed a descriptive qualitative approach, with data collected through observation and documentation of traders' transaction activities. The findings indicate that the utilization of QRIS among traditional market traders remains suboptimal. This condition is influenced by limited digital financial literacy, insufficient technological skills, and the readiness of business owners to adopt digital payment systems. In addition, concerns regarding transaction security and limited technological competence, particularly among elderly traders, remain significant barriers to digital transformation. Nevertheless, digital financial literacy has been shown to improve transaction efficiency, facilitate financial record-keeping, reduce transaction errors, and support more effective business management. Therefore, strengthening digital financial literacy is a strategic factor in optimizing QRIS adoption to enhance profitability and ensure the long-term sustainability of traditional market businesses in the digital economy.

The increasing competition in the coffee shop industry requires Micro, Small, and Medium Enterprises (MSMEs) to continuously improve service quality and product quality to maintain customer satisfaction and business sustainability. Ngopi Pojok 98 experienced a decline in revenue over several months, indicating potential problems related to service performance and product consistency. This study aims to analyze the improvement of customer satisfaction after implementing service quality and product quality enhancements at Ngopi Pojok 98. This research employed a quantitative approach using a One Group Pretest–Posttest Design. The sample consisted of 50 respondents selected through purposive sampling. Data were collected using questionnaires administered before and after the improvement program and analyzed using validity tests, reliability tests, the Shapiro–Wilk normality test, and the Paired Sample t-Test with the assistance of SPSS software. The results showed that all instruments were valid and reliable. The normality test indicated a significance value of 0.291 (>0.05), confirming normal data distribution. Furthermore, the Paired Sample t-Test produced a significance value of 0.000 (<0.05), indicating a significant difference in customer satisfaction before and after the improvements. The average satisfaction score increased from 29.68 to 34.88. These findings confirm that enhancing service quality and product quality effectively improves customer satisfaction in coffee shop MSMEs.

This study aims to analyze the language style employed by President Prabowo Subianto in his speech delivered at the 17th National Farmers and Fishermen Week in 2026 using Teun A. Van Dijk's Critical Discourse Analysis framework. The study employed a qualitative approach with documentation techniques applied to the official speech transcript. Data were analyzed through Van Dijk's three analytical dimensions, namely text, social cognition, and social context. The findings reveal that, at the textual level, the speech is dominated by themes of support for farmers and fishermen as strategic actors in national development and food security. At the superstructure level, the speech is organized argumentatively through personal experiences, policy explanations, and reaffirmation of governmental commitments. At the microstructure level, the speech demonstrates the use of informal language, rhetorical strategies, repetition, and lexical choices that strengthen the relationship between the speaker and the audience. In terms of social cognition, the findings indicate the speaker's awareness of the media's role in shaping public opinion, as reflected in several instances of meta-communication. Meanwhile, the social context dimension reveals representations of power relations through the construction of social groups positioned either as supporters or obstacles to national interests. These findings suggest that the speech functions not only as a means of political communication but also as a medium for constructing ideology, legitimizing power, and shaping political identity. This study reinforces the view that language plays a significant role in representing social realities and power relations within society.

Low courage in arguing and high communication apprehension often become major obstacles for high school students when facing academic presentations. This Community Service (PkM) program aims to strengthen students' communicative rhetoric skills and public speaking abilities at SMA Negeri 11 Makassar. Based on a needs assessment, partner students need techniques for persuasive public speaking, self-evaluation tools for their communication performance, and strategies for managing mental anxiety. The program was carried out through a practice-based reflective workshop involving 25 students from the school's intra-organizational board. Quantitative evaluation results showed a significant improvement in students' speaking competence, with the average score increasing from 58.4 (pre-test) to 86.2 (post-test). This result recorded an increase in the score difference by 27.8 points, which is equivalent to a competence growth of 47.6%, with the students' classical completeness rate reaching 92%. Qualitatively, observations and interviews confirmed changes in students' speaking behavior, which became more organized, expressive, and varied, and they were able to reduce anxiety independently. A tangible output of this activity is the Pocket Guide for Practical Public Speaking Based on Reflective Practice for partner students.