This research discusses the polymer optical fiber sensor for respiratory measurements. The infrared LED that produces light will propagate along the polymer optical fiber which will be received by the phototransistor and the differential amplifier. The output voltage in the form of an analog signal will be converted to a digital signal by the Arduino Uno microcontroller and displayed on the computer. The polymer optical fiber sensor is installed on the corset using a variety of configuration (straight, sinusoidal, and spiral), placed in the abdomen, and a variety of positions (abdomen, chest, and back) using only a spiral configuration. While doing the inspiration, the stomach will be enlarged so that the optical fiber sensor will have strain. The strain will cause loss of power, the resulting light intensities received by the phototransistor are reduced, and the output voltage on the computer decreases. The result shows that the highest voltage amplitudes were in the spiral configuration placed in the abdominal position for slow respiration measurements with the highest range, sensitivity, and resolution which are 0.119 V, 0.238 V/s, and 0.004 s, respectively. The advantages of our work are emphasized on measurement system simplicity, low cost, easy fabrication, and handy operation and can be connected with the Arduino Uno microcontroller and computer.

This study aims to determine the level of utility queuing system at PT. Pegadaian (Persero) Rappang Branch. The data collection techniques used in this study are interviews and observation. The population used in this study were all customers who came to PT. Pegadaian (Persero) Rappang Branch at 08.00-12.00 and 13.00-15.00. The data analysis technique in this study uses a descriptive method, which is a way of analyzing data by comparing the problem with existing theories, besides that, a formula is also used to solve the queue problem in PT. Pegadaian (Persero) Rappang Branch. The results of calculations using the M/M/S queuing method at PT. Pegadaian (Persero) Rappang Branch applies queue discipline, namely First Come First Server (FCFS). From the results of calculations using the queuing system method with multiple lines (M/M/S), it is known that the probability that there are 0 people in the system (no customers in the system) P0 is 8.78%, while the utility level of pawnshops/busyness P is 68% of the time that does not work. used 32% (empty service hours).