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The reliability of an e-commerce application is essential to ensure smooth and secure user transactions. This study discusses the implementation of Software Quality Assurance (SQA) on a web-based e-commerce application to test the functionality of the developed system. The testing methodology used in this research combines manual testing and automated testing using the Katalon Studio tool, following the Software Testing Life Cycle (STLC) framework. Manual testing was focused on validating the user interface and user experience across core workflows, including user registration, authentication, cart management, and the checkout process. Meanwhile, Katalon Studio was utilized to execute automated test scenarios on these crucial features to accelerate regression testing and ensure system stability. The results indicate that from 42 test cases executed, the SQA approach successfully identified five functional defects across three modules, categorized by severity into two High-level defects (server error on registration and missing error handling on checkout), two Medium-level defects (client-side-only address validation and cart quantity logic), and one Low-level defect (insufficient logout notification display time). Four of the five defects were resolved, raising the test pass rate from 90.5% to 97.6% during regression testing. Automated testing demonstrated a significant time efficiency of approximately 95% compared to manual execution for regression scenarios. In conclusion, the combination of manual and automated testing proved capable of thoroughly verifying software quality, ensuring that the SQA Shop application functions according to the required specifications before its release to end-users.

This study investigates the performance of Internet of Things (IoT)-based monitoring systems using a mobile hotspot and IoT sensors for temperature and humidity data transmission. The research is based on the IoT concept, which enables electronic devices to communicate and exchange data through internet networks without direct human intervention. System performance was evaluated using standard Quality of Service (QoS) parameters, including throughput, packet loss, delay, and jitter. The experimental setup utilized a NodeMCU ESP32 microcontroller and a DHT22 sensor, with measurements conducted at various transmission distances through wireless communication media. The objective was to determine the reliability of hotspot connectivity and sensor communication in supporting IoT applications. The results indicate that the optimal performance was achieved at a distance of 20 meters using a 40-lambda variation. Furthermore, the communication signal between the ESP32 device and the mobile hotspot remained detectable up to a maximum distance of 32 meters. These findings demonstrate the effectiveness of the proposed IoT system for environmental monitoring applications within specific transmission ranges.

This study was motivated by the lack of standardized and objective assessment instruments for the teaching of the Syofyani Minang Payung Dance at the junior high school level, resulting in an assessment process that remains largely subjective and fails to measure psychomotor, affective, and cultural aspects in a balanced manner. This study aims to design and test the validity and reliability of a performance assessment rubric for the Syofyani Minang Payung Dance in cultural arts education at SMP Negeri 1 Bukittinggi. The research method used is a mixed-methods approach with a sequential explanatory design. The research subjects consisted of three dance instructors serving as expert judges, one cultural arts teacher, and 33 junior high school students. The research instrument was a performance-based assessment rubric covering five competency indicators: basic movement techniques; alignment with musical rhythm and dynamics; expression and character interpretation; mastery of payung props and movement safety; and accuracy of floor patterns and group synchronization. Quantitative data analysis was conducted using IBM SPSS Statistics through the Corrected Item-Total Correlation validity test and Cronbach’s Alpha reliability test, while qualitative data was analyzed using descriptive-interpretive methods. The research results show that all indicators have validity scores above 0.30 and are therefore considered valid, and the Cronbach’s Alpha reliability score is above 0.70, indicating good internal consistency of the instrument. Furthermore, the interview results indicate that the rubric is considered relevant, clear, and aligned with the learning characteristics of Syofyani’s Minang Payung Dance at the junior high school level. Consequently, the developed assessment rubric is deemed suitable for use as an objective, standardized, and contextually appropriate assessment instrument for dance education rooted in local culture.

This study aims to analyze the effect of the Bank Indonesia interest rate on the Indonesian rupiah exchange rate against the United States dollar during the 2021–2026 period. A quantitative approach was employed using monthly time-series data obtained from official sources. The analysis was conducted using multiple linear regression with the assistance of EViews software. The dependent variable in this study was the rupiah exchange rate against the US dollar, while the independent variables included the Bank Indonesia interest rate, inflation, money supply (M2), and the Federal Reserve interest rate (Fed Rate). Prior to regression estimation, all data were tested for stationarity using the Augmented Dickey-Fuller (ADF) test to ensure compliance with time-series analysis requirements. Furthermore, the model was evaluated through classical assumption tests, including normality, heteroscedasticity, multicollinearity, and autocorrelation tests, to verify the validity and reliability of the estimation results. The findings reveal that the Bank Indonesia interest rate has a significant effect on the rupiah exchange rate, with a probability value of 0.0223. This result indicates that changes in the domestic interest rate can influence movements in the rupiah exchange rate against the US dollar. In contrast, inflation, money supply (M2), and the Fed Rate were found to have no significant effect on the rupiah exchange rate during the study period. Moreover, the classical assumption tests confirmed that the regression model satisfied all required criteria, indicating that the estimated results are reliable and can serve as a reference for economic policy formulation.

This study aims to determine the effect of the deep learning learning approach on fourth-grade elementary school students’ understanding of IPAS concepts, particularly on the topic of pollination in perfect flowers. This research employed a quantitative approach with a quasi-experimental design using a pre-test and post-test control group design. The population consisted of all fourth-grade students of SDN 4 Muara Dua, totaling 58 students, who were divided into experimental and control classes through total sampling techniques. Data collection techniques included tests, observations, and documentation. The research instruments were tested for validity and reliability before being implemented in the study. The results revealed that the implementation of the deep learning approach had a positive effect on students’ understanding of IPAS concepts. This was indicated by the higher post-test scores achieved by students in the experimental class compared to those in the control class. In addition to improving conceptual understanding, the deep learning approach also enhanced students’ critical thinking skills, activeness, and participation during the learning process. Therefore, the deep learning learning approach can be considered an effective alternative strategy to improve elementary school students’ understanding of IPAS concepts.

This literature study examines the procedures for developing creativity test instruments based on creative thinking indicators in educational assessment. The background of this study is driven by the limited availability of appropriate instruments that can accurately measure students’ creative thinking skills, as most existing assessments still emphasize lower-order thinking. The objective of this study is to analyze systematic procedures in developing valid and reliable creativity test instruments. The method used is a qualitative literature review of various studies on instrument development, particularly those applying Research and Development (R&D) approaches such as 4-D models. The findings show that the development process generally involves several stages, including needs analysis, formulation of test specifications, construction of items based on creative thinking indicators (fluency, flexibility, originality, and elaboration), expert validation, limited trials, and statistical analysis of validity and reliability. These indicators represent core dimensions of creative thinking that must be integrated into the instrument to ensure comprehensive measurement . The implications of this study highlight that systematic and theory-based procedures are essential to produce high-quality instruments that are valid, reliable, and practical, thereby supporting effective evaluation and fostering students’ creative thinking skills.

This study examines the role of extension agents in supporting the success of beef cattle farmer groups in Tabongo District, Gorontalo Regency. The success of farmer groups is influenced not only by livestock potential, but also by the effectiveness of extension services, institutional capacity, and farmers’ willingness to adopt improved farming practices. Using an explanatory approach, the study collected primary data from 50 members of beef cattle farmer groups across nine villages through a Likert-scale questionnaire. Data were analyzed using descriptive statistics, validity and reliability tests, classical assumption tests, and multiple linear regression. The descriptive findings show that extension agents performed well as educators, facilitators, motivators, dynamizers, and catalysts. However, the catalyst role was excluded from the regression model because its indicators were invalid. Partially, only the motivator role had a significant effect on group success, with a coefficient of 1.683, t-value of 4.758, and significance value of 0.000. The educator, facilitator, and dynamizer roles showed positive but insignificant effects. Simultaneously, the roles of extension agents significantly influenced group success, with an F-value of 9.474 and significance value of 0.000. The R Square value of 0.457 indicates that extension agents explained 45.7% of group success.

This study was motivated by the low basic multiplication skills of third-grade elementary school students, particularly in conceptual understanding, calculation accuracy, and problem-solving abilities. The objective of this study was to determine the effect of the Jarimatika method combined with the Problem Based Learning (PBL) model on students’ basic multiplication skills. This study employed a quantitative approach using a one-group pretest-posttest design. The participants were 30 third-grade students of SD Negeri Sukanegara. Data were collected through pretest and posttest instruments that had been tested for validity and reliability. The results showed a significant improvement in students’ multiplication skills after the treatment, as indicated by the increase in the mean score from 55.17 in the pretest to 80.00 in the posttest. The paired sample t-test analysis revealed a significant difference between pretest and posttest scores (t = -10.951, p = 0.000 < 0.05). The findings indicate that the implementation of the Jarimatika method combined with the Problem Based Learning (PBL) model effectively improves students’ basic multiplication skills and supports more active and meaningful mathematics learning.

An appropriate strategy has become a crucial factor for Micro, Small, and Medium Enterprises (MSMEs) in maintaining customer loyalty. This study focuses on analyzing the implementation of marketing communication strategies adopted by Nasi Goreng Barokah Jaya, an MSME located in Cikampek, to retain its loyal customers. This study employed a descriptive qualitative approach based on the 7P Marketing Mix theory developed by Kotler and Keller (2016). Data were collected through in-depth interviews, field observations, and documentation involving the business owner, employees, and loyal customers. The data were subsequently analyzed using the Miles and Huberman interactive model, while data validity was ensured through triangulation. The findings reveal that direct interaction, responsive and friendly service, word-of-mouth promotional activities, and personalized approaches serve as the main pillars in building customer loyalty. Customer loyalty is significantly influenced by product quality, price affordability, service reliability, and the emotional bond established between the business and its customers. These findings confirm that simple yet consistently implemented marketing communication strategies are effective in maintaining a loyal customer base in the culinary MSME sector.

The quick advancement of digital technology has drastically changed the social and religious life of Indonesian teenagers. The purpose of this study is to investigate how pupils at Al Muslim Junior High School's daily worship practices, self-control, and fear of missing out (FoMO) affect the principles of Islamic Religious Education (PAI). The study used a quantitative methodology with a causal and correlational design. All students in grades VII, VIII, and IX made up the study population for the 2025–2026 school year. Using the Slovin formula, a proportionate stratified sample of 171 students with a 5% margin of error was chosen. A five-point Likert scale questionnaire was used to gather data. The Pearson Product-Moment correlation (r > 0.30) was used to evaluate validity, while Cronbach's Alpha (α > 0.70) was used to test reliability. Multiple linear regression using SPSS version 26 was used for quantitative analysis, beginning with traditional assumption tests for heteroscedasticity (Glejser), multicollinearity (VIF), and normality (Kolmogorov-Smirnov). According to the analysis results, self-control had a substantial, favorable impact on the practice of PAI values, but FoMO had no significant influence (β = -0.034, p = 0.530).

The concrete block business is one of the micro-enterprises that develops in Wairotang Village and plays an important role in fulfilling the community’s need for building materials. However, in its development, sales fluctuate from year to year, which is assumed to be influenced by the level of consumer trust and the quality of the products produced. In addition, several problems still occur, such as concrete blocks that crack easily, inconsistent sizes, and varying levels of strength, leading consumers to hesitate in making repeat purchases. This study aimed to determine the influence of consumer trust and product quality on purchasing decisions of concrete blocks in Wairotang Village. The independent variables in this study were consumer trust and product quality, while the dependent variable was purchasing decision. This study was motivated by fluctuations in concrete block sales and the persistence of consumer doubts regarding product quality, including easily cracked blocks, inconsistent sizes, and varying strength levels. These conditions resulted in suboptimal consumer trust, which in turn affected purchasing decisions. This study used a quantitative research method. The population consisted of consumers of concrete blocks in Wairotang Village, and the sampling technique was purposive sampling. Data collection was conducted through questionnaires, observations, interviews, and documentation. The data were analyzed using descriptive analysis, validity tests, reliability tests, classical assumption tests, multiple linear regression analysis, t-tests, F-tests, and the coefficient of determination ($\text{R}^2$). The results were expected to show that consumer trust and product quality have a positive and significant influence on purchasing decisions of concrete blocks in Wairotang Village, both partially and simultaneously. A higher level of consumer trust and better product quality lead to increased purchasing decisions. Therefore, concrete block business actors will need to maintain product quality and build good relationships with consumers in order to improve purchasing decisions and ensure business sustainability.  

This study aims to clarify the conceptual differences between measurement, assessment, and evaluation; present a comparative analysis of their characteristics; formulate concrete application examples across four Arabic language skills (istima', kalam, qira'ah, and kitabah) in madrasah; and analyze evaluation principles in creating an objective and fair assessment system. The study employs a library research method with a descriptive-analytical approach through content analysis of relevant academic sources. The findings indicate that measurement, assessment, and evaluation form a hierarchical and mutually reinforcing relationship, yet they differ in scope, function, and purpose. Measurement focuses on quantifying learning outcomes, assessment interprets those results, and evaluation provides overall judgment for decision-making. The current imbalance in Arabic language evaluation at madrasah, which often emphasizes cognitive measurement alone, can be improved through comprehensive assessment of all four language skills. This should be grounded in principles of validity, reliability, objectivity, practicality, and positive washback to ensure a fair, meaningful, and educationally sound evaluation system.  

The background of this research is the fluctuation in the number of customers at Karunia Printing Digital Services in Maumere throughout 2025, as well as the existence of customer complaints regarding service quality and product quality. These issues indicate that customer loyalty has not yet been fully optimized. This research aimed to determine the influence of service quality and product quality on customer loyalty at Karunia Printing Digital Services in Maumere. This research used a quantitative approach using a survey method. The population of this research consisted of all customers of Karunia Printing Digital Services in Maumere. Data were collected through questionnaires, observations, interviews, and documentation. The data analysis techniques included descriptive analysis, validity testing, reliability testing, multiple linear regression analysis, t-test, F-test, and coefficient of determination (R²) using SPSS software. The results of the research indicated that service quality had a positive and significant effect on customer loyalty. Product quality also had a positive and significant effect on customer loyalty. Furthermore, service quality and product quality simultaneously had a positive and significant effect on customer loyalty at Karunia Printing Digital Services in Maumere. These findings suggested that the better the service quality and product quality provided, the higher the level of customer loyalty. Keywords: Service Quality, Product Quality, Customer Loyalty

Public Wi-Fi services (Wifi_STAKat) at the State Catholic College of Pontianak continue to face technical issues, such as network speed and connection stability, as well as non-technical challenges, including the responsiveness of administrators to user complaints. This study aims to analyze user satisfaction based on the five Servqual dimensions and to map improvement priorities using the Importance–Performance Analysis (IPA) method. The relationship between Servqual and IPA is explained by mapping GAP values (perception–expectation) into the four IPA quadrants to determine the urgency level of service improvements. A 4-point Likert scale was used to avoid neutral responses and strengthen the clarity of respondents’ perceptions. The results show that all dimensions have negative GAP scores, particularly responsiveness and reliability, which are directly related to technical indicators (speed, stability, coverage) and non-technical factors (responsiveness to complaints, ease of access. The study recommends integrating an IT-based monitoring system and increasing network capacity to improve service quality.

This study aimed to examine the effect of location and promotion on consumer purchase decisions at the Kekang Motorcycle Showroom in Nangalimang, Maumere. The independent variables in this study were location (X1) and promotion (X2), while the dependent variable was the purchasing decision (Y). This study employed a quantitative research method. The sample consisted of 75 respondents, selected using an accidental sampling technique. Data were collected through observation, questionnaires, and documentation. The data analysis techniques included validity testing, reliability testing, classical assumption testing, multiple linear regression analysis, t-test, F-test, and coefficient of determination (R²). The results indicated that location had a positive and significant effect on purchase decisions at the Kekang Motorcycle Showroom in Nangalimang, Maumere. Meanwhile, promotion did not have a significant effect on purchase decisions. Simultaneously, location and promotion had a significant effect on purchase decisions. Thus, consumer purchase decisions were more strongly influenced by location than by promotion. Keywords: Location, Promotion, Consumer Purchase Decision.

This study was conducted based on the crucial role of diesel generator engines as the primary source of electrical power on board ships, making their operational reliability essential. One of the factors influencing generator engine performance is lubricating oil temperature. Excessive lubricating oil temperature may reduce lubrication effectiveness, increase friction between moving components, and lower engine efficiency. Therefore, this research aimed to identify the causes of high lubricating oil temperature in diesel generator engines and determine appropriate corrective actions. The study employed a descriptive quantitative approach. Data were collected through direct observation, interviews, and documentation during sea practice aboard MV. CL FLANDERS from 4 July 2024 to 5 July 2025. The data were analyzed using simple linear regression to examine the relationship between generator load and lubricating oil temperature. The findings revealed that generator load had a significant effect on the increase in lubricating oil temperature. Under normal operating conditions, the lubricating oil temperature ranged from 60°C to 72°C, while under abnormal conditions it increased to between 68°C and 81°C. The abnormal rise in temperature was mainly caused by cooling system problems, particularly a dirty LO cooler, scale deposits on the sea water pump impeller, and blockage in the cooling capillary pipes. The regression equation under normal conditions was Y = 45 + 0.30X, whereas under abnormal conditions it was Y = 53.5 + 0.30X. Elevated lubricating oil temperature resulted in lower oil viscosity, higher fuel consumption, and reduced diesel generator engine performance. Therefore, regular maintenance of the LO cooler, sea water pump, and continuous temperature monitoring are necessary to maintain optimum engine performance.

Government procurement plays a strategic role in supporting effective, efficient, transparent, and accountable public administration. To promote procurement reform, the government has implemented an electronic procurement system through the Electronic Procurement Service (LPSE). The implementation of the Electronic Procurement System (SPSE) in Pematang Siantar City aims to improve procurement quality, reduce irregularities, and accelerate the delivery of goods and services. However, several challenges persist, including limited human resources capable of operating the system, technical disruptions, lack of outreach to local vendors, and weak coordination between the Procurement Unit (UKPBJ) and related agencies. This study aims to analyze the effectiveness of SPSE implementation in Pematang Siantar City. The research uses a descriptive qualitative approach. Data were collected through interviews with UKPBJ officials and procurement officers from several local government units, direct observation of procurement activities via SPSE, and documentation review. Data analysis employed Duncan’s effectiveness indicators: goal attainment, integration, and adaptation. The results show that SPSE implementation has not been fully effective. In terms of goal attainment, procurement processes follow established procedures, but delays still occur due to system disruptions and limited user competence. In terms of integration, coordination between UKPBJ and technical units remains suboptimal, affecting communication and oversight. Regarding adaptation, although the information technology infrastructure is adequate, human resource capacity is still limited. Therefore, improving human resources, strengthening coordination, and enhancing system reliability are necessary to achieve optimal effectiveness.

This study aims to analyze the partial and simultaneous influence of location, product diversity, and store layout on consumer purchasing decisions at Moncheri Hijab in Balikpapan. This research employed a quantitative approach using a survey method by distributing questionnaires to 170 respondents who were consumers of Moncheri Hijab in Balikpapan. The data analysis techniques used included validity testing, reliability testing, multiple linear regression analysis, t-test, and F-test. The results showed that partially, the location variable had a positive and significant effect on consumer purchasing decisions. Product diversity was also proven to have a positive and significant influence on purchasing decisions. Meanwhile, the store layout variable did not show a positive and significant effect on consumer purchasing decisions. However, simultaneously, the three variables, namely location, product diversity, and store layout, had a positive and significant influence on purchasing decisions among Moncheri Hijab consumers in Balikpapan. This study indicates that location and product diversity are the main considerations for consumers in making purchasing decisions, while store layout has not yet become a dominant factor influencing consumer purchasing decisions at Moncheri Hijab Balikpapan.

This study aims to examine the influence of trust on the perception of transaction security in the use of online shopping applications among millennials. The development of digital technology and the increasing use of online shopping applications have influenced how users assess security risks, personal data protection, and the reliability of transaction systems. This study employs a literature review method by examining relevant previous studies on trust, transaction security, digital risk, and user experience in online shopping. The findings indicate that user trust plays an important role in shaping perceptions of transaction security. Such trust is influenced by the platform’s ability to protect personal data, provide secure payment systems, and ensure smooth transaction processes. The higher the level of user trust in system security, the greater their tendency to use online shopping applications for transactions. Therefore, trust and transaction security are important factors in increasing millennials’ interest and comfort in online shopping.

This study conducts a systematic review of literature concerning the role of Management Information Systems (MIS) in managing Umrah pilgrim data across Indonesia. Employing a Systematic Literature Review (SLR) guided by the PRISMA protocol, the study examined and synthesized 24 peer-reviewed articles published between 2019 and 2026, drawn from Google Scholar, SINTA, and nationally accredited journal portals. Findings indicate that MIS adoption has yielded notable improvements in operational efficiency, data reliability, service transparency, and the overall quality of managerial decision-making within Umrah travel organizations. Web-based MIS remains the predominant technological approach, offering integrated modules for pilgrim registration, document handling, financial tracking, and departure scheduling. At the national level, government-initiated platforms such as SISKOHAT and SISKOPATUH have demonstrated tangible contributions to the administration of Hajj and Umrah services. Nevertheless, persistent obstacles continue to hinder full-scale adoption, including inadequate digital infrastructure in certain regions, inconsistent internet connectivity, and gaps in human resource competencies for operating digital systems. The study argues that embracing MIS is no longer optional for Umrah travel operators; rather, it constitutes a strategic necessity. Future research is encouraged to investigate long-term implementation outcomes, cross-system comparisons, and data security considerations within the broader digital landscape of pilgrimage service management.