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All Journal International Journal of Electrical and Computer Engineering International Journal of Informatics and Communication Technology (IJ-ICT) CAUCHY: Jurnal Matematika Murni dan Aplikasi Bulletin of Electrical Engineering and Informatics Annual Research Seminar Science and Technology Indonesia Demography Journal of Sriwijaya Jurnal Penelitian Sains BAREKENG: Jurnal Ilmu Matematika dan Terapan Teorema: Teori dan Riset Matematika QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Jurnal Pengabdian Magister Pendidikan IPA Jurnal Pemberdayaan: Publikasi Hasil Pengabdian Kepada Masyarakat INSIST (International Series on Interdisciplinary Research) Jurnal Gema Ngabdi Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Indonesian Journal of Electrical Engineering and Computer Science Journal of Applied Science, Engineering, Technology, and Education Jurnal Pengabdian dan Edukasi Sekolah (Jubaedah) International Journal of Science and Society (IJSOC) Uninus Journal of Mathematics Educations and Science (UJMES) Jurnal Pepadu Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Matematika Integratif Aksi Kita: Jurnal Pengabdian Kepada Masyarakat
Evi Yuliza, Evi
Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Transportation Other

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DETERMINING THE OPTIMAL TEMPORARY WASTE DISPOSAL SITES IN THE ALANG-ALANG LEBAR SUB-DISTRICT PALEMBANG USING THE P-CENTRE LOCATION PROBLEM AND P-MEDIAN PROBLEM MODELS Octarina, Sisca; Armalia, Divasanda; Suprihatin, Bambang; Bangun, Putra BJ; Cahyono, Endro Setyo; Puspita, Fitri Maya; Yuliza, Evi; Indrawati, Indrawati
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 18 No 4 (2024): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol18iss4pp2685-2702

Abstract

The rapid development of Palembang City comes with an increase in population and a proportionate increase in waste. Providing Temporary Waste Disposal Sites (TWDS) with ideal locations is one way to address the waste problem in Palembang City. The location of the existing TWDS could be more regular and optimal. The problem of determining the optimal TWDS location can be solved by optimization science, as classified in the Set Covering Problem (SCP) model. The SCP model is divided into the -Center Location Problem and -Median Problem models. This study aims to determine the optimal locations for TWDS in the Alang-Alang Lebar Sub-District, Palembang City, by comparing the results of the p-Center Location Problem and p-Median Problem models. Initially, the Alang-Alang Lebar Sub-District had 33 TWDS. After formulating the Set Covering Location Problem and Maximal Covering Location Problem models, we obtain the optimal solution, which we then solve using the -Center Location Problem and -Median Problem models. Based on the results and discussion, the optimal TWDS can meet the demand of each village in the Alang-Alang Lebar Sub-District. The -Center Location Problem and -Median Problem models produce the same optimal TWDS, namely TWDS Pramuka 2 Street and around, TWDS Colonel Sulaiman Amin Street, TWDS Talang Kelapa Ujung, and TWDS Beside Soekarno Hatta Street. This study recommends using both models to determine the optimal TWDS.
HOLT-WINTER METHOD FOR FORECASTING LIQUID ALUMINIUM SULFATE USAGE FOR PROBABILISTIC INVENTORY MODELING Q WITH ERLANG DISTRIBUTION Dwipurwani, Oki; Puspita, Fitri Maya; Supadi, Siti Suzlin; Yuliza, Evi; Qatrunnada, Dhiya
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 19 No 1 (2025): BAREKENG: Journal of Mathematics and Its Application
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol19iss1pp453-464

Abstract

Water is a natural resource important for life and daily activities. Water distributed by the Regional Drinking Water Company (PDAM) should include a coagulation process using liquid aluminum sulfate as a coagulant before it can be consumed. Therefore, this research aims to predict the need for liquid aluminum sulfate in PDAM from 2023 to 2024 using Holt-Winter's method. It also aims to evaluate the optimum liquid aluminum sulfate chemical inventory policy using Q probabilistic inventory model with Normal and erlang probabilistic distributions in PDAM. The data was obtained from Tirta Musi PDAM in Palembang City, Indonesia. The results of forecasting liquid aluminum sulfate demand level data with the Holt-Winter multiplicative method provide the smallest MAPE value. The erlang probability distribution assumption has been met through the Kolmogorov Smirnov test method. The erlang probabilistic inventory model provides a more optimal policy solution than the normal probabilistic inventory model, with minimum total cost and higher service level.
Wolfram Alpha based-inventory model for damaged items of pharmaceutics by utilizing exponential demand rate Indrawati, Indrawati; Puspita, Fitri Maya; Supadi, Siti Suzlin; Yuliza, Evi; Tampubolon, Farah Nabilah
Indonesian Journal of Electrical Engineering and Computer Science Vol 39, No 2: August 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v39.i2.pp1145-1154

Abstract

In this study, an inventory model is developed for pharmaceutical products that deteriorate over time with an exponential demand rate. The discussion of exponential demand is rarely explored but has the advantage that the demand value toward total cost remains positive. This study assumes allowable shortages and complete backlogging, making it necessary to design an optimal policy for deteriorating goods with an exponential demand rate. The model shows that the initial stock decreases over time, potentially leading to shortages before the next order arrives. The optimal solution indicates that the inventory reaches the zero point at ????1 = 0.0000011 and the cycle length ????1 = 0.012 resulting in an average minimum total cost of ????????̅̅̅̅ = $17,133.9 per cycle by Wolfram Alpha. Sensitivity analysis measures the changes of the results in the increasing value of ????????̅̅̅̅ for all parameters. Exponential function variables (???? and ????) produces ????1 and ????1 stable values. On increasing the cost of each damage (????????) and constant damage rate (????) produces a ????1 stable value, but the value of ????1 increases. An increase in storage costs (h) results in a decrease in the value of ????1 and ????1. Increasing in the cost of shortages (s) resulted in an increase in the value of ????1 and a decrease in the value of ????1.
Analisis Robust Counterpart Open Capacitated Vehicle Routing Problem dalam Meningkatkan Penguasaan Topik Riset Optimasi dalam Masalah Pengangkutan Sampah bagi Mahasiswa di Palembang Puspita, Fitri Maya; Sabana, Aprilia Nur; Octarina, Sisca; Yuliza, Evi; Rachmaningtiyaz, Diyaz; Ahmadi, Adik
Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Vol. 3 No. 2 (2021)
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmsi.v3i2.145

Abstract

Optimasi merupakan salah satu kajian dalam terapan Matematika yang bertujuan untuk mengoptimalkan suatu keadaan. Salah satu masalah yang dapat diaplikasikan dalam optimasi adalah masalah rute. Masalah nyata yang dapat diterapkan dalam kehidupan sehari-hari adalah permasalahan rute pengangkutan sampah. Pada permasalahan rute pengangkutan sampah dapat digunakan konsep Vehicle Routing Problem (VRP). Konsep optimasi pengangkutan sampah menggunakan konsep VRP merupakan salah satu konsep yang cukup populer di kalangan mahasiswa, namun konsep VRP sendiri tidak terlalu dibahas secara mendalam dalam perkuliahan. Oleh karena itu kegiatan ini bertujuan untuk memberikan pemahaman mahasiswa dalam menggunakan konsep VRP dalam masalah pengangkutan sampah.
Fair DSL-LTE Dynamic Spectrum Design Based-Utility Functions on Multiple Quality of Service Network Puspita, Fitri Maya; Rahmadia, Putri; Yuliza, Evi; Indrawati, Indrawati; Sitepu, Robinson; Octarina, Sisca; Yunita, Yunita
Journal of Applied Science, Engineering, Technology, and Education Vol. 5 No. 2 (2023)
Publisher : PT Mattawang Mediatama Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.asci2042

Abstract

The purpose of this research is to formulate a C-RAN(Cloud-Radio Access Network) model based on a fair network combined with an isoelastic utility function and a modified cobb-douglas utility function and then optimize the consumer problem on bandwidth consumption by dividing the financing scheme into three, namely flat-fee, usage-based, and two-part tariff. This research uses traffic data containing inbound and outbound data with two split time which are in off-peak and on-peak hours. The data is obtained through one of the local server in Palembang. Previous research informed that the C-RAN model get optimal benefit if Internet Service Provider (ISP) applies it. The improvement of the model is to be conducted using two utility function to seek for improved solutions. The new proposed model has best solution that has been improved using an isoelastic utility function of flat-fee financing type with an objective value obtained of 1.83333 with 17 iterations. It can be concluded that new designed model can achieve better results rather than old version involving C-RAN model
SOSIALISASI PENTINGNYA MINAT BACA UNTUK MENINGKATKAN KUALITAS LITERASI MASYARAKAT DESA Octarina, Sisca; Hanum, Laila; Puspita, Fitri Maya; Indrawati, Indrawati; Yuliza, Evi; Bangun, Putra BJ
Jurnal Pepadu Vol 5 No 2 (2024): Jurnal PEPADU
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v5i2.4996

Abstract

The awareness of the importance of reading in Indonesia, especially in rural areas, still needs to improve. Rural communities need to understand the importance and benefits of reading. Along with the times, people and even children prefer to use gadgets for entertainment, listening while watching, and other entertainment activities. This activity aimed to enhance the importance of reading interest in rural communities, foster critical thinking and analytical abilities, and improve literacy within the village. The methods employed in this activity included presentations, discussions, question-and-answer sessions, and simulations. The service activity team delivered a presentation on the benefits of reading, an explanation of reading sources, and techniques to enhance interest in reading. Furthermore, a discussion session was held between the service activity team and participants to ascertain the extent of their understanding. The outcome of this activity was to advise children and students to engage in 15 minutes of non-lesson reading before the commencement of the lesson. This program was implemented to foster students' interest in reading and improve their reading skills. This activity identified new avenues for promoting interest in reading, including the procurement of reading books in schools that must be updated according to the times, educators who innovate, increasing educators' competence, and expanding the library collection. Utilizing the reading corner to increase interest in reading, it needs to be supported by all parties. The results of the analysis indicate that the literacy movement's impact can increase interest in reading. Therefore, the results of this activity can be recommended for the school literacy movement to improve students' interest in reading.
IMPLEMENTASI PERMAINAN EDUKATIF BERBASIS LINGKUNGAN MELALUI PELATIHAN DAN PENDAMPINGAN BAGI GURU-GURU SD DI PEMULUTAN Yuliza, Evi; Bangun, Putra Bahtera Jaya; Cahyono, Endro Setyo; Nurnawati, Elisa; Puspita, Fitri Maya; Octarina, Sisca; Indrawati, Indrawati
Jurnal Pepadu Vol 6 No 3 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i3.5509

Abstract

Learning activities at school carried out by elementary school students must sometimes be interspersed with educational games aimed at attracting students' interest and stimulating their brains and creativity. Educational games for elementary school children are games designed to stimulate and train students' brain development, foster imagination, develop students' creative thinking and improve memory. This service activity aims to introduce environmentally based educational games to teachers so that they are skilled at developing varied and interesting educational games. The method used in implementing this service activity is training and mentoring. This activity goes through three stages, namely delivery of material, discussion and evaluation. The results of this training and mentoring show that the average percentage of statement scores is 97.5%. This shows that environmentally based educational games provide cognitive, psychomotor and affective development for students, environmentally based educational games can create a pleasant learning atmosphere and provide stimulation for the development of children's abilities. Through this service activity, teachers can increase their knowledge of environmental-based educational games so that the learning process becomes interesting and fun.
PENGAPLIKASIAN MODEL MATEMATIKA TERHADAP KESEIMBANGAN BAHAN DENGAN TEKNIK ECO ENZYME DALAM PENDAMPINGAN PEMUPUKAN BAYAM BRAZIL DI DESA PULAU SEMAMBU INDRALAYA Puspita, Fitri Maya; Octarina, Sisca; Yuliza, Evi; Hanum, Laila; Aryani, Robeah; Hernanda, Eggyana Deri
Jurnal Pepadu Vol 5 No 4 (2024): Jurnal PEPADU
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v5i4.5857

Abstract

Konsep model matematika sudah banyak diterapkan dalam berbagai bidang, dalam hal ini terhadap pendampingan pemupukan tanaman, khususnya bayam brazil. Dengan menggunakan teknik eco enzyme yang sesuai memberikan hasil panen yang optimal (maksimal) dalam konsep model matematika. Jenis tanaman yang mudah dibudidayakan salah satunya adalah bayam brazil. Tanaman tersebut merupakan salah satu jenis sayuran yang sangat memiliki banyak manfaat untuk dikonsumsi dan diolah oleh masyarakat. Kegiatan pendampingan tersebut adalah suatu proses pengabdian terhadap masyarakat tentang pentingnya pemupukan bayam brazil mengunakan eco enzyme (EE) dalam konsep model matematika sederhana. Suatu cairan multifungsi yang disebut dengan EE dari proses fermentasi sampah organik yang biasa dijumpai di dapur rumah tangga seperti berbagai jenis sayuran dan kulit buah yang beraneka macam. EE juga berguna sebagai pupuk yang efisien dan tidak merusak lingkungan. Selain itu, manfaat dari cairan tersebut dapat digunakan untuk mengusir hama pada tanaman serta sebagai pupuk tanah dan tanaman. Oleh sebab itu, pada pengabdian masyarakat ini dipilihlah EE sebagai cairan yang berguna untuk pupuk pada bayam brazil sesuai model matematika terhadap keseimbangan bahannya.
PENDAMPINGAN PENGGUNAAN GOOGLE COLAB PADA PEMBELAJARAN PYTHON DAN MACHINE LEARNING BAGI DOSEN MATEMATIKA DI PALEMBANG Octarina, Sisca; Puspita, Fitri Maya; Yuliza, Evi; Indrawati, Indrawati
Jurnal Pepadu Vol 6 No 1 (2025): Jurnal Pepadu
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/pepadu.v6i1.6457

Abstract

Learning and research in higher education have experienced many challenges and problems, especially after the Covid-19 pandemic. However, these challenges have been overcome using online learning platforms such as Moodle University, Zoom, Google Meetings, and Microsoft Teams. However, this has not been fully resolved in the field of research. It is sometimes complicated for research teams to work together on research. Research records or research logbooks are not quickly sent via email. In addition, research records, such as computer programming, require direct handling of the program that has been created without copying and pasting. Mathematics research also requires fast and dynamic access. Google Colab is a Google collaboration that provides free, cloud-based tools for education and research. Google Colab is particularly eye-catching because it gives users free access to GPU services as a computing backend that can be used for 12 hours. If you want to learn Python and machine learning, buying a computer with an additional GPU is unnecessary. The training process in these two fields is tricky, especially if the equipment is inadequate. Mathematics lecturers in Palembang need assistance because lecturers' knowledge about Google Colab is still very low. The implementation team conducted a mentoring activity on using Google Colab for machine learning and Python through the Zoom platform. The activity consists of several stages: explanation, tutorial, and practice.
Determining the Best Location for COVID-19 Vaccine Distribution in Palembang Using the Set Covering Problem Model and Greedy Heuristic Algorithm Octarina, Sisca; Ahmadi, Adik; Wahyuni, Dian; Ulandari, Mazida; Puspita, Fitri Maya; Yuliza, Evi; Bangun, Putra BJ
International Journal of Science and Society Vol 6 No 1 (2024): International Journal of Science and Society (IJSOC)
Publisher : GoAcademica Research & Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54783/ijsoc.v6i1.1021

Abstract

Optimizing the location of public health facilities is crucial to ensure public accessibility. Palembang City uses public health facilities for COVID-19 vaccine distribution and administration. This study identified the best location for COVID-19 vaccine distribution in Palembang City by implementing the Set Covering Problem (SCP) model and solving it with the Greedy Heuristic Algorithm. The SCP model consists of the Set Covering Location Problem (SCLP) model and the p-Centre Location Problem (p-CLP) and considers the separating distance between vaccine distribution sites located in each sub-district of Palembang City. The p-CLP model was formulated, and the Greedy Heuristic Algorithm was executed to determine the optimal distribution location for COVID-19 vaccines. The SCLP model successfully identified 27 optimal COVID-19 vaccine locations in Palembang City. These locations were subsequently used to formulate the p-CLP model. The p-CLP model's solution and the application of the Greedy Heuristic Algorithm yielded 27 optimal vaccine sites, which include Ariodillah Health Centre, Naga Swidak Health Centre, Sako Health Centre, Bukitsangkal Health Centre, Sei Lincah Health Centre, Kenten Health Centre, Kalidoni Health Centre, Pakjo Health Centre, Sei Baung Health Centre, Merdeka Health Centre, OPI Health Centre, Sosial Health Centre, Talang Betutu Health Centre, Myria Hospital, Sukarami Health Centre, Keramasan Health Centre, Karya Jaya Health Centre, 7 Ulu Health Centre, Sabokingking Health Centre, Charitas Hospital, Dr. Mohammad Hasan Hospital, Siti Khadijah Hospital, Bunda Hospital, Bunda Noni Hospital, Pelabuhan Kelas ll Palembang Health Office, Tiara Fatrin Hospital, and Alang-Alang Lebar Health Centre.
Co-Authors Adik Ahmadi Adinda Putri Ramadhany, Adinda Putri Ahmadi, Adik Alfensi Faruk Ali Amran Aprilia Nur Sabana Arden Naser Yustian Simarmata Armalia, Divasanda Aryani, Robeah Ayu Nursafitri AYU WULANDARI Ayu Wulandari Bambang Suprihatin Bela Olivia Mareta Silaen Bella Juwita Rezky Desta Wahyuni Destia Maharani Dewi Lisandra Dian Wahyuni Diyaz Rachmaningtiyaz Diyaz Rachmaningtyas Eka Susanti Eka Susanti Elisa Nurnawati Endro Setyo Cahyono, Endro Setyo Fadhila Chaniago, Redina An Fidella Oktariana Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Helmayanti, Rizky Hernanda, Eggyana Deri Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Jaya Bangun Jurnal Pepadu Laila Hanum Malica Putri Amdes Maya Puspita, Fitri Muthia Ulfa Nadia Zuliaty Syaputri Ning Eliyati Novi Rustiana Dewi Nuraini, Anggun Oki Dwipurwani Oki Dwipurwani Pratiwi, Weni Dwi Putra Bahtera Putra Bahtera Jaya Bangun, Putra Bahtera Jaya Putra BJ Bangun, Putra BJ Qatrunnada, Dhiya Rachmaningtiyaz, Diyaz Rahmadia, Putri Ramadani, Diah Putri Ramadhan, Ahmad Farhan Rani Elekta Togatorop Resmadona Reza Andeka Rindarto, Ahmad Rizki, Krisda Robinson Sitepu Rohania Rohania Rohania Rohania Sabana, Aprilia Nur Sarjani, Ita Sisca Octarina Siti Suzlin Supadi Supadi, Siti Suzlin Tampubolon, Farah Nabilah Tasiah, Mawar Tri Handayani Triyani Triyani Ulandari, Mazida Venty Wenny Herlina Weny Herlina Yolanda Fitria Yuli Andriani Yuni Kartika YUNITA Yunita Yunita Yunita Yunita Yunita Yunita Yusuf Hartono