Tekinfo: Jurnal Ilmiah Teknik Industri dan Informasi

Proposed Queue System Improvements Using Arena Simulation Software for Dental Services at Gamping 1 Community Health Center

Thu, 26 Mar 2026 00:00:00 +0000

The high volume of queues in public health services directly threatens service quality and patient satisfaction. At the Dental Clinic of Puskesmas Gamping 1, the surge of patients, especially on busy days such as Saturday, causes the ratio of waiting time to service time to increase significantly, indicating serious inefficiencies in the system. The urgency of this research is to design an optimal and sustainable queuing system to break the cycle of long queues and patient complaints. This study aims to analyze, evaluate, and optimize the efficiency of the queuing system of the Dental Clinic of Puskesmas Gamping 1. The research method used is computer-based discrete simulation (Discrete Event Simulation). Queuing data and service time were collected through direct observation and processed using the distribution test. Valid data is then modeled in Arena software. The simulation model was validated and verified to reflect real conditions. Next, two improvement scenarios were developed: (1) adding one registration officer and (2) adding one service officer. The simulation results show that the existing system has an average waiting time of 35.4 minutes. The best improvement scenario was Scenario 2 with the addition of one service officer, which significantly reduced patient waiting time by 60% to 14.2 minutes. In conclusion, Arena simulation is an effective tool for Puskesmas queuing system optimization. Recommendations for the implementation of the best scenario are expected to improve the efficiency and quality of services at the Dental Clinic of Puskesmas Gamping 1.

Techno-Economic Analysis and Optimization of the Transportation Fleet of CV XYZ

Her Tafga Arfanindita, Anirawilda Purba, Siti Mardiyah, Welly Mahardhika — Wed, 29 Apr 2026 02:51:03 +0000

CV. XYZ is a company engaged in the distribution of herbal products, honey, and books, where one of its main operational activities is delivering products to partner pharmacies. Currently, the distribution process relies on motorcycles, which have limited carrying capacity. This limitation results in inefficiencies in delivery time, increased operational costs, and a higher risk of product damage due to weather conditions. Therefore, it is necessary to evaluate alternative transportation modes to improve distribution performance and operational efficiency. This study aims to analyze the investment feasibility of three transportation alternatives, namely purchasing a new box truck, purchasing a used box truck, and renting a box truck. The research applies a techno-economic analysis using Net Present Value (NPV) and Payback Period (PP) methods. Data were collected through field observations, interviews with company stakeholders, and relevant literature studies. The results indicate that all investment alternatives are financially feasible, as they generate positive NPV values. However, the used box truck alternative yields the highest NPV of Rp1,851,659,384 and the shortest payback period of 1 month and 27 days. Therefore, purchasing a used box truck is identified as the most optimal alternative for improving distribution efficiency at CV. XYZ. This study is expected to provide practical insights for investment decision-making, particularly for small and medium-sized enterprises in the logistics and distribution sector.

Developing University Branding Merchandise Using 3D Printing Technology

Wed, 29 Apr 2026 03:10:14 +0000

Merchandise serves as a branding medium that can be utilized to build the image of an organization, including higher education institutions. However, merchandise development in universities is often still generic and has not optimally explored institutional identity elements in an integrated manner, nor has it been widely examined from the perspective of user perception toward design and production technology. This study aims to develop a merchandise product in the form of a keychain that represents the identity of Universitas Tidar, while also evaluating the influence of design and 3D printing technology information on user perception. Two keychain designs were developed based on the identity elements of Universitas Tidar and realized into 3D models using CAD software, then fabricated using 3D printing technology. The evaluation was conducted through a questionnaire involving 440 student respondents based on four aspects: identity, usability, quality, and aesthetics, while considering differences in information treatment regarding the production process. The results indicate that both designs received generally positive ratings, with no statistically significant difference between them. In addition, providing information about the use of 3D printing technology did not significantly influence respondents’ perceptions. Further findings reveal that color is the most dominant factor affecting respondents’ evaluations, particularly in representing the university’s visual identity. Therefore, selecting colors that are more aligned with the identity of Universitas Tidar should be prioritized in future design development to enhance the effectiveness of merchandise as a branding medium.

Comparative Analysis of Transportation Methods in The Distribution of Frozen Chicken Products

Wed, 29 Apr 2026 07:08:44 +0000

Distribution is a critical component of logistics systems, especially in the food industry where perishable products such as frozen chicken require strict temperature control and timely delivery. CV XYZ, a frozen chicken distributor in Batam, encounters several operational challenges, including high transportation costs, limited cold chain infrastructure, and inefficient allocation of distribution routes. These issues not only increase operational expenses but also pose risks to product quality and delivery reliability. Therefore, an effective distribution strategy is required to ensure cost efficiency and service performance. This study aims to identify the most efficient transportation method to minimize distribution costs by applying three initial solution approaches: North West Corner Rule (NWCR), Least Cost (LC), and Vogel’s Approximation Method (VAM). The solutions obtained from each method were further evaluated using the Stepping Stone method to test their optimality. This research adopts a quantitative approach using a mathematical transportation model, with data collected through interviews and direct field observations. The results show that the VAM method produces the lowest initial distribution cost of Rp57,062,000, compared to Rp60,022,000 for the LC method and Rp63,916,000 for the NWCR method. After optimality testing, only the VAM solution remained unchanged, indicating that it had already reached optimality. Thus, VAM is recommended as the most effective method for optimizing frozen chicken distribution costs at CV XYZ Batam.

Redesigning Low Cost Smart Walking Cane for Visually Impaired Individuals Using Design to Cost

Wed, 29 Apr 2026 07:45:31 +0000

Mobility and independence remain significant challenges for individuals with visual impairments, particularly due to the limited availability of affordable assistive technologies. This study presents the redesign of a low-cost smart walking cane using the Design to Cost (DTC) approach, which emphasizes cost as a key design constraint without compromising essential functionality. The research methodology includes user needs analysis, concept development, material and component selection, prototyping, and performance testing. The proposed cane integrates a PVC shaft, an ultrasonic sensor, an Arduino Nano microcontroller, and a vibration motor to provide tactile feedback when obstacles are detected within a range of 2–30 cm. The prototype demonstrates responsive performance, ease of use, and ergonomic suitability, with an estimated production cost of approximately IDR 120,000, making it accessible to low-income users. Despite its effectiveness, the system is limited by a short detection range and the absence of advanced navigation features. Overall, this study highlights that simple and cost-efficient design strategies can produce functional assistive devices, contributing to improved safety, independence, and quality of life for visually impaired individuals, while offering a foundation for future development of more advanced and inclusive mobility aids.

Analysis of User Complaints in Text Mining-Based Healthcare Applications

Nur Laily Haryanti, Sayyidah Maulidatul Afraah, Ratih Dianingtyas Kurnia — Fri, 01 May 2026 14:35:05 +0000

The digital transformation of healthcare in Indonesia has led to the emergence of services like Mobile JKN to improve access and service efficiency. However, ongoing user complaints regarding ease of access and system reliability indicate the need for user experience-based evaluation. This study aims to identify user complaint patterns, evaluate the ease of application access, and formulate recommendations for improvements to enhance the quality of digital public services in the healthcare sector, particularly the Mobile JKN application. This study uses a text mining approach to user reviews on the Google Play Store, referring to software quality characteristics based on the ISO/IEC 25010 standard. The research process was carried out through several stages, starting from data collection (scraping), preprocessing and text cleaning, review filtering based on keywords related to performance and satisfaction, and sentimen analysis to understand user perceptions more comprehensively. The results of word frequency analysis and word cloud visualization indicate that the most dominant user complaints are related to security and access control, particularly related to login problems and OTP verification failures that hinder service access. On the other hand, this application demonstrates excellence in performance efficiency, particularly the online queuing feature which is considered fast, practical, and helps users save time. Based on a SWOT analysis, this study recommends strengthening the authentication system infrastructure and improving data synchronization to minimize access barriers and increase user trust. These findings are expected to serve as a strategic reference for digital healthcare managers in improving service quality, user retention, and community satisfaction in a sustainable manner.

Integrating Fuzzy-AHP–Based Lean Tools and Six Sigma–FMEA for Defect and Lead Time Reduction in Creative Industry SMIs

Dwi Adi Purnama — Wed, 06 May 2026 17:45:37 +0000

The expansion of the creative industry in Indonesia has intensified competitive pressure on manual-production-based SMEs, making process efficiency and product quality critical factors in maintaining competitiveness. At Gendhis Natural Bag, observations revealed that non-value-added activities accounted for 38% of total production time, with a lead time of 6,527 seconds and a defect rate of 15,183.73 DPMO. These conditions indicate that the challenges faced are not only related to process flow inefficiencies but also involve product quality issues, necessitating an integrated improvement approach to systematically identify, prioritize, and reduce waste. This study proposes an integrated lean improvement framework by combining Value Stream Mapping (VSM), VALSAT, Kaizen 5S, and Six Sigma–FMEA, while Fuzzy-AHP is used to objectively determine waste priorities. The research findings indicate that defects are the most critical form of waste, while PAM identified that 38% of total production time consists of non-value-added (NVA) activities, which are dominated by delays and setup time. Based on the improvement plan using the Kaizen 5S approach, production lead time is projected to decrease from 6,527 seconds to 4,377 seconds, with the potential to increase output from 30 to 42 units per day. Additionally, the proposed quality improvement using the Six Sigma–FMEA approach is estimated to reduce the DPMO value from 15,183.73 to 8,928.57 and increase the sigma level from 3.69 to 3.87. These findings indicate that the proposed integrated improvement framework has the potential to enhance the efficiency and quality of the production process and can serve as a relevant approach for SMEs with manual production systems.

Integration of Data Driven Approach Using AHP, Clustering, AR-MBA, and Classification to Improve Performance of MSME Restaurant

Aji Adinata Firjatullah, Reyhandi Rachmad Fadila Wicaksono, Dwi Adi Purnama — Mon, 11 May 2026 06:49:40 +0000

The restaurant industry in Indonesia has experienced rapid growth alongside technological advancements and digitalization. Innovations in service, marketing, and operations have become key factors in improving business performance amid intense competition. SMEs such as Warung Makan Mantap Jaya in Yogyakarta need to implement the right strategies to adapt, enhance customer satisfaction, and strengthen their competitiveness. This study aims to formulate data-driven performance improvement strategies by integrating the Analytical Hierarchy Process (AHP), Clustering, Association Rule–Market Basket Analysis (AR-MBA), and Classification methods using data from 150 respondents. The results indicate that, based on the AHP method, renovating the premises is the top priority with the highest weight of 0.389, followed by discount innovations (0.365) and menu promotions (0.235). Clustering analysis identified three customer segments with distinct characteristics, where the majority of customers fall into the dissatisfied group, characterized by low visit frequency, low spending, and dissatisfaction with service. Meanwhile, some customers exhibit high satisfaction levels with higher visit frequency and spending. AR-MBA analysis identified purchasing patterns that generated menu bundling recommendations, such as combinations of Iced Tea, Chicken with Water Spinach, and Bakwan; Fried Egg and Mineral Water; and Soy Sauce Chicken and Tea Juice. Additionally, a classification method was used to predict customer satisfaction levels based on the resulting data patterns