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All Journal Jurnal Pengabdian Magister Pendidikan IPA Semeton Mathematics Journal
Syauqi, Shofiyurrahman
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Education Mathematics

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Overcoming Drought Problems in Selengen Village, North Lombok through Simple Technology of Fog Harvesting and Seawater Distillation Syauqi, Shofiyurrahman; Uswatul Ulya; Gina Sonia; Mochammad Restu Julian; Maiser Syaputra
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 1 (2025): Januari-Maret 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i1.10668

Abstract

Drought is a serious problem faced by the people of Selengen Village, North Lombok, especially during the dry season. Limited clean water sources hamper agricultural activities and domestic needs. To overcome this water crisis, two simple technologies were applied: fog harvesting and seawater distillation. The fog harvesting technology utilizes air humidity to produce clean water, while seawater distillation uses solar energy to convert saltwater into potable water. A participatory approach was applied through counseling, training, and mentoring for the community and students of SMKN 1 Kayangan. Results show that both technologies have potential as alternative solutions to drought, although their effectiveness is affected by weather conditions. Further education and mentoring are needed to improve the sustainability of the application of these technologies.
Traffic Waiting Time Optimization: An Effective Effort to Overcome Congestion at Gede Ngurah Cakranegara Intersection Setiawati, Setiawati; Rahmi, Dhea Wasila; Syauqi, Shofiyurrahman; Purnamasari, Dara
Semeton Mathematics Journal Vol 1 No 1 (2024): April
Publisher : Program Studi Matematika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/semeton.v1i1.206

Abstract

Intersections are places that are prone to traffic congestion. This is due to the location and function of the intersection, which if left unchecked will lead to accidents. To overcome this problem, traffic lights are made to regulate traffic flow conditions. Gede Ngurah Cakranegara Intersection is an intersection that has high congestion conditions, this is due to its location in the city center and its function as a main road. In addition, the trigger for congestion at the Gede Ngurah Cakranegara intersection is the waiting time which is still not optimal and the lack of orderly drivers in obeying the traffic lights. Thus, the purpose of this study is to optimize the total waiting time at the Gede Ngurah Cakranegara intersection. Total waiting time optimization is done using compatible graph. The compatible graph in this case will describe the condition of traffic flows that will run simultaneously without interfering with each other, so that they are safe and do not collide with each other. This study uses primary data obtained from field observations conducted in the morning, afternoon and evening. After optimization, the total waiting time at the Gede Ngurah Cakranegara intersection following the light signal is 180 seconds and the total waiting time for those who do not follow the light signal is 120 seconds. Compared to the previous waiting time of 538 seconds, a more optimal time was obtained.
Co-Authors Gina Sonia Mochammad Restu Julian Purnamasari, Dara Rahmi, Dhea Wasila Setiawati Setiawati Syahputra, Maiser Uswatul Ulya