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All Journal International Journal of Electrical and Computer Engineering International Journal of Informatics and Communication Technology (IJ-ICT) SEMIRATA 2015 Annual Research Seminar JPSriwijaya Science and Technology Indonesia 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 Gema Ngabdi Jurnal Pengabdian Masyarakat Sains Indonesia (Indonesian Journal Of Science Community Services) Journal of Applied Science, Engineering, Technology, and Education Jurnal Pengabdian dan Edukasi Sekolah (Jubaedah) Jurnal Pepadu Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Matematika Integratif Aksi Kita: Jurnal Pengabdian Kepada Masyarakat
Sisca Octarina
Universitas Sriwijaya
Religion Agriculture, Biological Sciences & Forestry 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 Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Neuroscience Physics Public Health Social Sciences Transportation Other

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Fair DSL-LTE Dynamic Spectrum Design Based-Utility Functions on Multiple Quality of Service Network Fitri Maya Puspita; Putri Rahmadia; Evi Yuliza; Indrawati Indrawati; Robinson Sitepu; Sisca Octarina; 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
Robust-Set Covering Problem and Sensitivity Analysis to Determine The Location of Temporary Waste Disposal Sites Octarina, Sisca; Bangun, Putra Bahtera Jaya; Cahyono, Endro Setyo; Suprihatin, Bambang; Sarjani, Ita; Puspita, Fitri Maya; Yuliza, Evi
Science and Technology Indonesia Vol. 9 No. 2 (2024): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2024.9.2.260-272

Abstract

The increasing population has resulted in a significant increase in the amount of waste. One effort that can be made to overcome the waste problem is to provide a Temporary Waste Disposal Site (TWDS). This research aims to optimize the TWDS in the Bukit Kecil sub-district, Palembang city, by formulating a Robust-Set Covering Problem (Robust-SCP) model and solving the model with the software. Sensitivity analysis is used to analyze the optimal solution. Bukit Kecil sub-district is the sub-district that has the highest number of TWDS in Palembang city. The robust-SCP model obtained 10 optimal TWDS. Therefore, this research recommends the Robust SCP model as the optimal solution for the determination of TWDS in the Bukit Kecil sub-district, namely TWDS Kartini Street, TWDS front of Starbucks KI Street, TWDS Merdeka Street, TWDS Illegal at 26 Ilir Market, TWDS Flat Block 35, TWDS Flat Block 49, TWDS Merdeka Women’s Prison, TWDS Musi Riverbank Park, TWDS Monpera, and TWDS Cinde Market, with the addition of TWDS Mayor’s Office in 22 Ilir village and TWDS Flat Block 01 in 23 Ilir village. The sensitivity analysis results in this study show that the solution remains optimal if the coefficient change is within the coefficient interval value.
Quasi linear and stone geary utility functions based-internet service financing scheme with marginal costs and monitoring costs Indrawati, Indrawati; Puspita, Fitri Maya; Yuliza, Evi; Dwipurwani, Oki; Octarina, Sisca; Helmayanti, Rizky
International Journal of Informatics and Communication Technology (IJ-ICT) Vol 13, No 2: August 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijict.v13i2.pp143-151

Abstract

The use of computer network technology is currently increasing, especially on the internet network. To connect to the actual internet, it is a task for internet service provider (ISP). Providing advantages to ISPs, it requires a financing scheme. This study's goal is to present a modified model for internet service financing schemes, within the customer choices and consumer satisfaction levels to maintain the schemes. To achieve the best outcomes, this updated model is built through marginal costs and cost monitoring while taking into account service quality based on stone-geary utility functions and quasi-linear utility functions. This research provides a solution regarding the differences in increasing consumer interest with payment options on model modification that will be provided. Traffic Digilib in a local server in Palembang. According to this study, a usage-based financing strategy and a two-part pricing of IDR 2727.8 per kbps will yield the highest revenues.
Pendampingan Pemupukan Bayam Brazil Dengan Eco Enzyme Dengan Keseimbangan Bahan Sesuai Pola Matematika Di Desa Pulau Semambu Indralaya Maya Puspita, Fitri; Octarina, Sisca; Yuliza, Evi; Hanum, Laila; Aryani, Robeah; Hernanda, Eggyana Deri
Jurnal Gema Ngabdi Vol. 6 No. 1 (2024): JURNAL GEMA NGABDI
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jgn.v6i1.417

Abstract

Brazilian spinach is a type of spinach that is very easy to cultivate and consume by the public because this plant is easy to plant and process and also has good health benefits when consumed. This mentoring activity, which is a community service activity regarding fertilizing Brazilian spinach, aims to provide maximum (optimal) harvest results using eco enzyme techniques that are appropriate to the dosage in the soil and plants with the concept of mathematical models. Eco Enzyme (EE) is a fermentation in the form of a multi-purpose liquid that comes from kitchen waste or organic waste such as fruit peels, vegetables and other food waste. EE can be used as an environmentally friendly fertilizer because this liquid can function as soil and plant fertilizer, eliminate pests, and can improve the quality of vegetables or fruit. Therefore, the selection of EE as fertilizer for Brazilian spinach plants with a balance of ingredients is in accordance with the mathematical model carried out in community service
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 PENGEMBANGAN ALAT PERAGA EDUKATIF DALAM PEMBELAJARAN MATEMATIKA BAGI GURU SEKOLAH DASAR DI DESA PELABUHAN DALAM KECAMATAN PEMULUTAN Octarina, Sisca; Indrawati, Indrawati; Puspita, Fitri Maya; Bangun, Putra Bahtera Jaya; Yuliza, Evi
Jubaedah : Jurnal Pengabdian dan Edukasi Sekolah (Indonesian Journal of Community Services and School Education) Vol. 4 No. 3 (2024): Jurnal Pengabdian dan Edukasi Sekolah (Jubaedah)
Publisher : LPPM Universitas Bina Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46306/jub.v4i3.270

Abstract

It is a fallacy to assume that mathematics can be taught in a one-way manner, whereby the teacher reads the material and students sit and listen. In order to facilitate comprehension of the material being taught, a variety of teaching aids are required. A further challenge is that not all teachers have the time to create their teaching aids. Furthermore, the creation of teaching aids necessitates a considerable degree of creativity. Not all educational institutions have the financial resources to procure instructional materials, particularly those in public schools in underprivileged regions. The objective of this activity is to assist in the development of educational teaching aids for teachers and educators in elementary schools in Pelabuhan Dalam Village, Pemulutan District, Ogan Ilir Regency, South Sumatra. This activity will enhance students' engagement and comprehension of the subject matter presented by the instructor. The mentoring activity is comprised of several stages, commencing with a survey, a presentation of material on the creation of teaching aids, tutorials on the construction of said aids, and concluding with the practical application of said aids by the activity participants. The activity was conducted over four meetings and ended with a post-test to assess the participants' comprehension of the mentoring material that had been provided. The participants in this service activity were 14 elementary school teachers and educators. The implementation team consisted of four lecturers from the Department of Mathematics, Faculty of Mathematics and Natural Sciences, Sriwijaya University, and eight students. The results of the test demonstrated that 92.8% of participants scored above 80, and 85.7% of participants indicated that they strongly agreed that this mentoring activity was beneficial and hoped that it could be continued
Model of Improved Set Covering Location Problem in Determining The LRT Musi Emas Feeder Stops: Route LRT DJKA Station - Plaju Terminal Octarina, Sisca; Puspita, Fitri Maya; Yuliza, Evi; Indrawati; Tasiah, Mawar
Science and Technology Indonesia Vol. 10 No. 2 (2025): April
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.2.320-335

Abstract

This study aims to determine the optimal location of the LRT Musi Emas Feeder stops Corridor 5 in conjunction with the LRT DJKA Station-Plaju Terminal route. Light Rail Transit (LRT) is a rapid transit system that employs an integrated rail crossing model. At present, the LRT remains a primary mode of daily transportation for the residents of Palembang. One of the initiatives undertaken by the government to facilitate the utilization of LRT transportation is the provision of passenger transportation (feeder services). The positioning of the feeder stops remains suboptimal and needs more integration with existing public facilities. The distance between the stop locations is highly variable, with some nearby and others at considerable distances. This issue is addressed through the formulation of the Set Covering Problem (SCP) model, which encompasses the Set Covering Location Problem (SCLP) and Maximal Covering Location Problem (MCLP) models, as well as the development of the Improved SCLP model. The SCP model yields four optimal stop locations, which are significantly distant from the actual conditions at the site. In contrast, the Improved SCLP model identifies 48 optimal feeder stops mapped using Geographic Information System (GIS) software. This map of feeder stops could inform the Palembang City Transportation Agency’s efforts to develop an integrated transportation management system.
Pengelolaan Penanaman Bayam Brazil Pada Tanah Tandus Secara Matematika dengan Menggunakan Eco-Enzyme Puspita, Fitri Maya; Venty; Tri Handayani; Reza Andeka; Fidella Oktariana; Destia Maharani; Dewi Lisandra; Ayu Nursafitri; Laila Hanum; Evi Yuliza; Sisca Octarina; Yolanda Fitria
Aksi Kita: Jurnal Pengabdian kepada Masyarakat Vol. 1 No. 4 (2025): JULI-AGUSTUS
Publisher : Indo Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63822/xmh3gt88

Abstract

Penanaman Bayam Brazil (Alternanthera sissoo) di lahan kritis seperti tanah tandus dan rawan banjir memerlukan pendekatan pengelolaan yang inovatif. Penelitian ini membahas strategi pengelolaan berbasis eco-enzyme yang dikombinasikan dengan pemodelan matematika untuk mengoptimalkan pertumbuhan dan hasil tanaman. Eco-enzyme hasil fermentasi limbah organik, terbukti meningkatkan kesuburan dan retensi air tanah. Dalam praktiknya, pengelolaan dilakukan melalui persiapan tanah, aplikasi dosis eco-enzyme yang terukur, serta evaluasi pertumbuhan tanaman secara berkala. Evaluasi menunjukkan peningkatan pertumbuhan dan hasil tanaman secara signifikan. Penelitian ini menunjukkan bahwa pengelolaan berkelanjutan berbasis matematika dan teknologi bio-organik seperti eco-enzyme dapat menjadi solusi adaptif terhadap perubahan iklim dan degradasi lahan.
Improved Dynamic Spectrum and Traffic Management Model Based on Demand Response and Heterogeneous Incentives with Perfect Substitute Utility Function Puspita, Fitri Maya; Octarina, Sisca; Yunita; Ramadhany, Adinda Putri; Yuliza, Evi
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.766-776

Abstract

The purpose of this research is to design and optimize a demand response based-selfish user Cloud Radio Access Network (C-RAN) model to demonstrate with a narrow-minded client utilizing three financing plans specifically level charge, usage-based, and two-part tariff. The Traffic data is classified into incoming data and outgoing data, obtained from a local server in Palembang. The optimal solution is obtained by determining the decision variables and parameters used in each case for all models, compiling improved C-RAN models as many as 2 models, namely model I, and model II, and then determining the optimal solution and sensitivity analysis using LINGO 13.0 software. The most optimal solution is obtained from model II with a flat-fee scheme in case 1 of IDR 3299.7/kbps with 45 iterations. The results of the sensitivity analysis is on the variables ak,m that allows the increase and decrease in the objective function coefficient. At the same time, the value 0 will be constant.
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.
Co-Authors Adik Ahmadi Adinda Putri Ramadhany, Adinda Putri Ahmadi, Adik Ani Sahara Br. Simanjuntak Aprilia Nur Sabana Armalia, Divasanda Aryani, Robeah Asri Kuntari Asri Kuntari, Asri Ayu Nursafitri Ayu Wulandari Bambang Suprihatin Bambang Suprihatin Belly Wardhani Chatrin Yohana Simamora Destia Maharani Devi Gusmalia Juita Dewi Lisandra Diyaz Rachmaningtiyaz Diyaz Rachmaningtyas Elisa Nurnawati Endro Sastro cahyono Endro Setyo Cahyono, Endro Setyo Evi Yuliza Evi Yuliza Evi Yuliza Evi Yuliza Evi Yuliza Evi Yuliza Evi Yuliza, Evi Fidella Oktariana Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Fitri Maya Puspita Gina Sonia Gusti Ahta Virgo Haryati Pane Helena Valenta Br Kemit Helmayanti, Rizky Hernanda, Eggyana Deri Ide Lestari Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Indrawati Jaya Bangun Jurnal Pepadu Laila Hanum Maya Puspita, Fitri Miranda Avifana Nanang Suwandi Narasti Wulandari Ning Eliyati Novi Rustiana Dewi Nur Attina Eliza Oki Dwipurwani Oki Dwipurwani Putra Bahtera Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun Putra Bahtera Jaya Bangun, Putra Bahtera Jaya Putra BJ Bangun, Putra BJ Putri Rahmadia Rachmaningtiyaz, Diyaz Rani Elekta Togatorop Ranti Sawitri Resmadona Reza Andeka Rika Apriani Rima Melati Rizka Aniza Robeah Aryani Robinson Sitepu Robinson Sitepu Robinson Sitepu Sabana, Aprilia Nur Sarjani, Ita Sisca Puspita Sepriliani Siti Suzlin Supadi Sugandi Yahdin Tasiah, Mawar Tri Handayani Venty Yolanda Fitria Yulia Anisawati YUNITA Yunita Yunita