Abstract:This study developed and evaluated a standalone, non-intrusive radio frequency identification (RFID)-based elevator access control system for a four-story residential building. The system used an Arduino Uno, an MFRC522…
RFID reader, and relay interfaces to regulate access to Floors 2, 3, and 4. Authorized card identifiers and floor permissions were stored locally, enabling offline operation without an external database or network connection. The relays interfaced only with the elevator push-button circuits and did not modify the original controller, motor drive, door mechanism, or safety system. Performance was evaluated using 47 registered cards and three unregistered cards, with each card tested 50 times, producing 2,500 authentication trials. Under the tested conditions, all registered cards were correctly authenticated according to their assigned floor permissions, while all unregistered cards were rejected. The system achieved 100% authentication accuracy, 100% correct relay activation, and 100% unauthorized-card rejection. Stable card detection was obtained at distances of up to approximately 1 cm. The first-floor button remained independent of the RFID module to preserve minimum accessibility during module failure. The proposed system provides a practical and low-cost retrofit solution for floor-specific elevator access control in small residential buildings.
Abstract:Penelitian ini dilatarbelakangi oleh pentingnya kadar hemoglobin sebagai salah satu parameter dalam menentukan kelayakan calon pendonor darah. Kadar hemoglobin diketahui dapat dipengaruhi oleh berbagai faktor, di antaranya…
ya status gizi, asupan protein, dan aktivitas fisik. Oleh karena itu, penelitian ini bertujuan untuk mengetahui hubungan antara status gizi, asupan protein, dan aktivitas fisik dengan kadar hemoglobin pada calon pendonor di Unit Transfusi Darah (UTD) PMI Surabaya. Penelitian menggunakan metode observasional dengan desain cross-sectional yang melibatkan 170 calon pendonor yang dipilih melalui teknik consecutive sampling. Status gizi diukur berdasarkan Indeks Massa Tubuh (IMT) melalui pengukuran antropometri, asupan protein dinilai menggunakan kuesioner Semi-Quantitative Food Frequency Questionnaire (SQ-FFQ), aktivitas fisik diukur menggunakan International Physical Activity Questionnaire-Short Form (IPAQ-SF), sedangkan kadar hemoglobin diperoleh dari hasil pemeriksaan yang dilakukan oleh petugas PMI Surabaya. Analisis data dilakukan menggunakan uji korelasi Spearman. Hasil penelitian menunjukkan bahwa tidak terdapat hubungan yang signifikan antara status gizi dengan kadar hemoglobin (p=0,207) maupun antara asupan protein dengan kadar hemoglobin (p=0,196). Sebaliknya, aktivitas fisik memiliki hubungan yang signifikan dengan kadar hemoglobin (p=0,011) dengan arah hubungan positif dan kekuatan korelasi yang sangat lemah (r=0,195). Berdasarkan hasil tersebut, dapat disimpulkan bahwa aktivitas fisik berhubungan secara signifikan dengan kadar hemoglobin pada calon pendonor di UTD PMI Surabaya, sedangkan status gizi dan asupan protein tidak menunjukkan hubungan yang bermakna dengan kadar hemoglobin.
Kata Kunci : aktivitas fisik, asupan protein, donor darah, hemoglobin, status gizi
Abstract:Customer loyalty is a crucial factor in maintaining the sustainability of any service business, including the laundry business. Al-Matuq Islamic Boarding School Laundry experienced a decline in turnover and frequency of…
repeated service usage during the 2023–2025 period, indicating a decline in customer loyalty. This study aims to analyze the effect of service quality and price on customer loyalty, with customer satisfaction as a mediating variable. The study used a quantitative approach with a survey method of 133 Al-Matuq Islamic Boarding School Laundry customers selected using a purposive sampling technique. Data analysis was conducted using Structural Equation Modeling (SEM) assisted by AMOS 26. The results showed that service quality has a positive and significant effect on customer satisfaction (β = 0.647; p < 0.001), price has a positive and significant effect on customer satisfaction (β = 0.313; p = 0.002), price has a positive and significant effect on customer loyalty (β = 0.443; p < 0.001), and customer satisfaction has a positive and significant effect on customer loyalty (β = 0.197; p = 0.035). In contrast, service quality does not have a significant effect on customer loyalty (β = 0.077; p = 0.544). These findings indicate that customer satisfaction plays an important role in increasing customer loyalty, while service quality contributes more through increasing customer satisfaction than directly to loyalty. The implications of this study emphasize the importance of consistently improving service quality and setting prices that are in accordance with the benefits received by customers to increase customer satisfaction and loyalty in a sustainable manner
Abstract:This study aims to analyze the influence of Instagram Content and Posting Frequency on Purchase Intention at Coffee Shop Elsana Pontianak. This research uses an associative quantitative approach. The research sample amounted…
nted to 150 respondents who were consumers of Coffee Shop Elsana Pontianak and followed the related Instagram account. Data collection was carried out through the distribution of questionnaires using a 5-point Likert scale. Data analysis was conducted using multiple linear regression with the assistance of SPSS version 26 through validity tests, reliability tests, classical assumption tests, correlation coefficient analysis, coefficient of determination, and hypothesis testing using t-tests and F-tests. The results of the study indicate that all research instruments are valid and reliable. Partially, Instagram Content has a positive and significant effect on Purchase Intention with a t-value of 7.273 and a significance of 0.000. Posting Frequency has a positive and significant effect on Purchase Intention with a t-value of 3.970 and a significance of 0.000. Simultaneously, Instagram Content and Posting Frequency have a significant effect on Purchase Intention with an F-value of 82.834 and a significance of 0.000. The coefficient of determination (R²) value of 0.530 indicates that 53.0% of Purchase Intention can be explained by Instagram Content and Posting Frequency, while the remaining 47.0% is influenced by other factors outside the study.
Abstract:The rapid development of financial technology has transformed the way university students conduct daily financial transactions. Digital payment systems offer convenience, speed, and accessibility; however, their use may…
also influence students’ financial management behavior. This study aims to analyze the relationship between digital payment usage and financial management behavior among Management students at the Faculty of Economics and Business, Universitas Negeri Makassar (FEB UNM). The study focuses on how the frequency, ease of use, perceived usefulness, and security of digital payment services contribute to students’ ability to manage expenses, control spending, plan budgets, and make financial decisions. This research employs a quantitative approach by collecting data through questionnaires distributed to Management students. The data are analyzed to identify the influence of digital payment usage on students’ financial behavior. The findings are expected to provide empirical evidence that digital payment usage can affect students’ financial habits, particularly in terms of spending control, budgeting discipline, and transaction awareness. This study contributes to the literature on digital finance and student financial behavior by highlighting the importance of responsible digital payment adoption. Practically, the results may provide insights for universities, students, and financial service providers in promoting financial literacy and healthier financial management practices in the digital era.
Abstract:This study highlights the problem of managing teak wood raw materials in the form of boards at UD Gemilang, Gunungsitoli City. The company often experiences shortages or excess inventory due to a conventional ordering system…
stem that is not based on optimal demand calculations. This inefficiency causes wasteful costs and disrupts the smooth production process. The main objective of this study is to analyze current inventory management and apply the EOQ (Economic Order Quantity) method to determine the optimal order quantity, as well as evaluate its impact on cost efficiency and production operations. The EOQ method is expected to be a systematic and rational solution for managing inventory more efficiently. This study uses a descriptive quantitative approach. Data were collected through direct interviews with business owners and documentation of raw material purchasing and usage reports for 2024. The analysis was conducted using the EOQ formula to calculate the optimal order quantity, ordering costs, storage costs, safety stock, reorder point, and total inventory cost (TIC). The analysis results show that the optimal order quantity for teak wood raw materials is 282 boards, with an ordering frequency of 6 times a year. This number is more efficient than the actual ordering system which is carried out monthly without a fixed calculation. The recommended safety stock is 22 boards, with a Reorder Point (ROP) of 36 boards. The implementation of the EOQ method successfully reduced total inventory costs from Rp6,768,000 to Rp3,496,800.
Abstract:The main objective of this study is to compare and analyze the effectiveness of the MRP (Material Requirement Planning) method in optimizing raw material inventory management in the Nias Tofu business. This study uses a…
mixed method. Primary data in this study were obtained directly from the Nias Tofu business through observations and interviews, while secondary data were obtained from the company in the form of production data from the Nias Tofu Product business in 2024. Data analysis was conducted using descriptive analysis techniques and the steps taken in the method analysis.MRP. According to the analysis results, the 2024 soybean raw material purchasing and demand data using the conventional method showed a shortage of raw materials of 14,200 kg with an order frequency of 14 times. Inventory management experienced inefficiencies, namely storage costs of IDR 1,600,000 and ordering costs of IDR 400,000, and raw material shortages still occurred, while the application of the MRP method resulted in order planning with an order frequency of 6 times, a fixed order quantity of 16,784 kg, and a much lower total inventory cost of IDR 335,160. The implementation of the MRP method has proven successful in eliminating raw material shortages and reducing operational costs so that the production process runs more smoothly and efficiently. This study proves that the application of MRP is effective in managing raw materials and optimizing production in the Nias Tofu business, making a significant contribution to smooth production and inventory cost efficiency.
Abstract:This study aims to analyze the impact of Good Corporate Governance (GCG) on tax aggressiveness in mining companies listed on the Indonesia Stock Exchange (IDX). A quantitative approach was used in this research, with secondary…
ondary data obtained from financial statements and annual reports of companies over a certain period. The results show that GCG, particularly independent board commissioners and the frequency of board meetings, has a negative and significant impact on tax aggressiveness. However, the influence of the audit committee and the nomination and remuneration committee on tax aggressiveness is not significant. These findings underscore the importance of stronger GCG implementation to reduce risks associated with corporate tax policies. This study provides important implications for companies and regulators in enhancing effective corporate governance to reduce tax aggressiveness in the mining sector.
Abstract:Measuring portfolio performance cannot only be seen from the returns, but also must pay attention to the risks that investors will bear. Measuring the performance of a stock portfolio can be facilitated by using a proxy,…
namely LQ 45 shares, which are liquid stocks with high market capitalization, have high trading frequency, have good growth prospects and financial conditions, are not volatile and have been objectively selected by the IDX and are stocks. which is safe to own because the fundamental performance of these stocks is good, so that from a risk perspective the LQ 45 stock group has the lowest risk compared to other stocks. The research objective was to determine portfolio performance assessment using the Jensen method, a case study of the LQ45 index on the Indonesian stock exchange for the 2019-2022 period. The population in this study is LQ45 index shares on the Indonesian stock exchange for the 2019-2022 period based on a purposive sampling technique. Data collection is documentation and literature study. The data analysis that will be used in this study is by using the Microsoft Excel 2010 application program to form an optimal portfolio using the Single index model and to assess the performance of a stock portfolio using the Jensen index method. the results of portfolio performance analysis of Jensen's Alpha LQ45 index optimal stocks and obtaining an average RVOR value of 0.0207 or 2.07%.
Abstract:Direct incentive programs from a brand manufacturer to a distributor's sales force are uncommon in the Indonesian B2B lighting sector, and their consequences for portfolio composition and distributor profitability have not…
ot been empirically tested. This study examines whether a flat 3 percent quarterly bonus, applied uniformly across a portfolio of more than three hundred products spanning a 600-fold price range, produces unintended consequences beyond its stated goal of volume growth. A sequential explanatory mixed-methods design is used. The quantitative phase analyses 781 product-quarter observations covering 326 products over eleven quarters from mid-2023 through end-2025. The qualitative phase uses confirmatory interviews with seventeen informants from distributor management and sales teams. The incentive program successfully drives all four sales performance dimensions measured in the study, covering volume growth, revenue share, transaction frequency, and a cumulative growth index, all of which are statistically significant. However, higher-priced products attract significantly fewer transactions per quarter and grow more slowly over time. Seven of eight hypotheses are supported. Qualitative findings confirm that the incentive effect adds to total selling activity rather than redirecting it, but transaction attention consistently concentrates on lower-priced products across the eleven-quarter period. The study extends agency theory to a three-party setting and provides the first panel-level evidence of composition effects from a uniform sales incentive in Indonesian B2B distribution.