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All Journal JURNAL SISTEM INFORMASI BISNIS Jupiter Jurnal Simetris Jurnal Informatika Jurnal Informatika Jurnal SIMADA (Sistem Informasi dan Manajemen Basis Data) CESS (Journal of Computer Engineering, System and Science) Informatika Mulawarman: Jurnal Ilmiah Ilmu Komputer Journal of Advanced in Information and Industrial Technology (JAIIT) Jurnal Teknik Informatika (JUTIF) ELECTROPS : Jurnal Ilmiah Teknik Elektro Jurnal Teknik Industri
Arif Harjanto
Fakultas Teknik Universitas Mulawarman, Samarinda
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Environmental Science Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering

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Journal : Jurnal Teknik Informatika (JUTIF)

 1 
A CHARACTERISTICS OF LINEARITY AND SENSITIVITY IN MEASURING THE MQ-4 SENSOR ON GAS LINE LEAKAGE Arif Harjanto; Fatkhul Hani Rumawan; Didit Suprihanto; Haviluddin Haviluddin; Bangkit Bekti Nurdianto
Jurnal Teknik Informatika (Jutif) Vol. 3 No. 2 (2022): JUTIF Volume 3, Number 2, April 2022
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.jutif.2022.3.2.229

Abstract

A natural gas utilization with a domestic house-gas pipeline is essential. However, the house-gas installation pipe can cause a dangerous leak, so the house-gas leak detector is requires. This study aims to build and analyze a leak detector for natural gas flow on the stove using the MQ-4 gas sensor based on the house-gas linearity and sensitivity characteristics levels in the air with a threshold of 1000 ppm. Based on experimental, the sensor linearity value for the detected house-gas has been obtained in a correlation coefficient of 0.99 which indicates the sensor is quite sensitive in order to the house-gas detected. Then, the sensor sensitivity value has been acquired with the regression equation Y=-0.00449+(0.000481)X which means the voltage value at 0 ppm is around -0.00449 volts and increase at each ppm are 0.000481 volts with a value of 0.000481 volts with the effectiveness of the tools reaches 100%. Therefore, the study shown that the detection tools and systems can work properly.
REDESIGNING THE UI/UX WEBSITE FOR THE INDUSTRIAL ENGINEERING DEPARTMENT AT MULAWARMAN UNIVERSITY USING DESIGN THINKING METHOD Hadi, Amirul; Sukmono, Yudi; Harjanto, Arif; Suprihanto, Didit
Jurnal Teknik Informatika (Jutif) Vol. 5 No. 1 (2024): JUTIF Volume 5, Number 1, February 2024
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2024.5.1.1252

Abstract

The industrial engineering department website of Mulawarman University faces challenges in disseminating academic information due to inadequate maintenance. This research utilizes the design thinking method to enhance the website's user interface and user experience (UI/UX) and evaluate its usability against the current version. The decision to use design thinking is grounded in its established effectiveness in improving website UI/UX. The study involves empathizing, defining, ideating, prototyping, and testing phases. User needs and concerns were identified through interviews, observations, and tools such as affinity diagrams, user personas, and user journey maps. Creative concepts were developed and organized using the priority matrix, sitemap, and user flow. Wireframes and mockups facilitated pre-construction design visualization. The redesigned UI/UX prototype resulted in a significantly improved user experience, as evidenced by the results of the user experience questionnaire and system usability scale. The initial UEQ scores indicated low usability, with attractiveness at 0.85, perspicuity at 1.01, efficiency at 0.71, dependability at 0.76, stimulation at 0.41, and novelty at -0.18. Following the redesign, scores notably increased, attractiveness at 2.06, perspicuity at 1.89, efficiency at 1.94, dependability at 1.79, stimulation at 2.05, and novelty at 1.64. SUS testing revealed an average rise to 76 from 63 points, indicating enhanced user satisfaction, acceptance, and descriptive ratings. The website's grade improved from C to B after the redesign. In conclusion, the UI/UX redesign successfully enhanced website usability and user experience.
Co-Authors Abi Romadon Amirul Hadi, Amirul Andi Rustandi Arif Zuhdi Winarto Arru, Hetin Tandi Bangkit Bekti Nurdianto Burhandenny, Aji Ery Delwizar, Muhammad Arya Didit Suprihanto Didit Suprihanto, Didit Fahrizal, Ahmad Jidan Fajar Nugraha Fatkhul Hani Rumawan Fitriani Fitriani Haviluddin Haviluddin Hetin Tandi Arru Hidayat, Aldi Muhammad Isal, Andi Joyce Anasthasya Caroline Misbahul Munir Muhammad Arifin Ningsih, Yunita Andrian Nugroho, Happy Nur Lailly Olivia Angelica Murtioso Pusaka, Semerdanta Rumawan, Fatkhul Hani Saputra, Galih Yudha Sri Karnila Toni Prahasto Utomo, Muhammad Dodi Utomo, Restu Mukti Wirawan, Adi Pandu Yudi Sukmono, Yudi Yunita Andrian Ningsih Yusriawan, Muhammad