Jurnal Media Computer Science

Design Of A Website-Based Patient Medical Record Application (Case Study: Rumah Sakit Advent Medan)

Deka S. N. Sigalingging, Rian Farta Wijaya — Thu, 11 Sep 2025 10:51:34 +0700

Medical records are documents containing patient identity data, examination, treatments, procedures, and other services provided to patient. The management and storage of medical records at Advent Hospital are still conducted manually, leading to data duplication, input errors, and time-consuming data retrieval processes. This study aims to develop a web-based medical record information system to enhance the efficiency of patient data processing. The system was build using PHP and MySQL with Software Development Life Cycle (SDLC) cascade model (waterfall model). Black box testing results indicate that all functions of the medical record system operate efficiency and validly. The system is effective in reducing data duplication and accelerating data retrieval.

Comparative Analysis Of The Efficiency Of Auxiliary Power Unit (APU) And Ground Support Equipment (GSE) On The Electrical System Of Airbus A320 Aircraft

Luvan Ardiansyah, Parlin Siagian; Haris Gunawan — Thu, 11 Sep 2025 10:52:11 +0700

This research analyzes the efficiency comparison between the Auxiliary Power Unit (APU) and Ground Power Unit (GPU) on the Airbus A320 aircraft's electrical system during ground operations. Aircraft operations require a stable power supply, provided by either an internal APU or an external GPU. Although the APU offers flexibility, its high fuel consumption and significant environmental impact are considerable concerns. Conversely, the GPU is deemed more efficient and environmentally friendly. The study aims to calculate energy consumption, analyze efficiency, and recommend the most efficient and environmentally sound electrical power source. The method employed is a quasi-experimental field observation, involving direct data collection from a Houchin LTD model C690 GPU unit. Data collection was conducted over 7 days, from June 1 to June 7, 2025. Data analysis includes mathematical calculations for energy efficiency and operational economic analysis. Research findings indicate that the GPU significantly outperforms the APU. The diesel GPU exhibits an energy efficiency of approximately 31.30%, considerably higher than the APU's around 1.54% (based on 7 days of data). The GPU also presents superior electrical power quality, characterized by a higher Power Factor and lower Total Harmonic Distortion (THD). It is recommended that airlines prioritize GPU usage, and airport authorities expand Fixed Electrical Ground Power (FEGP) infrastructure to enhance energy efficiency and reduce operational costs.

The Effect Of Stator Excitation Current On The Driving Torque Of A Single-Phase “6/6” Switched Reluctance Generator Design With External Excitation

Gidion Simatupang, Parlin Siagian, Muhammad Erpandi Dalimunthe — Thu, 11 Sep 2025 10:52:57 +0700

Switched Reluctance Generators (SRGs) have attracted attention due to their robust construction, low cost, and high fault tolerance, suitable for extreme environments. However, SRGs suffer from torque ripple and acoustic noise due to the non-linear torque-excitation current relationship. Although SRG component optimization has been investigated, a gap exists in the analysis of the effect of stator excitation current on the drive torque in a single-phase "6/6" SRG design with external amplification. This study analyzes the impact of varying stator excitation current on the drive torque of a single-phase 6/6 SRG. The methodology includes design, finite element analysis (FEA), and testing of an initial drive torque prototype. Results show that increasing the stator coil supply voltage results in a greater magnetic force, which counteracts the mechanical torque on the rotor shaft. This understanding is crucial for optimizing torque performance, mitigating ripple, and improving SRG efficiency for future applications.