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All Journal Sinkron : Jurnal dan Penelitian Teknik Informatika Desimal: Jurnal Matematika Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Jurnal Serambi Engineering JURNAL MATHEMATIC PAEDAGOGIC MES: Journal of Mathematics Education and Science Majalah Ilmiah Matematika dan Statistika (MIMS) Journal of Research in Mathematics Trends and Technology FARABI: Jurnal Matematika dan Pendidikan Matematika JURNAL MITRA PRIMA MATHunesa: Jurnal Ilmiah Matematika Journal of Fundamental Mathematics and Applications (JFMA) Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Lentera: Multidisciplinary Studies Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Journal of Environmental and Development Studies Lentera: Multidisciplinary Studies
Nababan, Esther Sorta Mauli
Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering 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 Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Veterinary

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Kajian Metode Hungarian dalam Optimisasi Masalah Pembagian Tugas Arbia, Rahmad; Nababan, Esther Sorta Mauli; Nasution, Putri Khairiah; Syahputra, Muhammad Romi
MES: Journal of Mathematics Education and Science Vol 10, No 1 (2024): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v10i1.9490

Abstract

Masalah pembagian tugas bisa muncul dalam berbagai konteks, seperti di tempat kerja, atau dalam sebuah proyek. Masalah ini biasanya terjadi ketika ada ketidak seimbangan dalam pembagian beban kerja, di mana satu pihak merasa terbebani atau tidak adil dibandingkan pihak lain. Permasalahan tersebut terjadi karena pekerjaan dikerjakan oleh orang yang tidak memiliki ahli sesuai bidangnya. Dalam konteks ini, pembagian kerja berdasarkan kemampuan mereka adalah hal yang sangat penting untuk diperhatikan. Hal ini tak lain agar Perusahaan dapat mencapai tujuannya dan menghindari kesalahan dalam pengelolahan sumber daya manusia. Salah satu pendekatan untuk mengatasi masalah ini adalah metode Hungarian, yang telah digunakan dalam penelitian ini. Hasilnya menunjukkan bahwa metode Hungarian menghasilkan nilai yang optimal.
Penerapan Metode Fuzzy Service Quality dalam Analisis Kepuasan Pelayanan Kesehatan Febriani Safitri; Suryati Sitepu; Esther Sorta Mauli Nababan; Parapat Gultom
Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika Vol. 2 No. 6 (2024): Desember : Jurnal Arjuna : Publikasi Ilmu Pendidikan, Bahasa dan Matematika
Publisher : Asosiasi Riset Ilmu Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/arjuna.v2i6.1326

Abstract

Fuzzy logic is an element of Boolean logic, where fuzzy logic is used to handle the concept of degrees of truth between true and false (Yanif, et al, 2011; Henny, 2018). Fuzzy logic theory also provides a method for representing uncertainty and is an excellent tool for modeling uncertainty related to vagueness. To obtain the level of service satisfaction for patients, it can be seen from the difference between the services provided to patients and the patient's expectations. Padang Sidempuan General Hospital is a health service provider. The increase and decrease in patients in the hospital can be caused by the results of the services provided by the hospital to patients. The more patients feel safe and comfortable, the number of consumers will also increase. The method that is relevant to this problem is the Servqual approach combined with Fuzzy theory to measure the patient's gap in perception and expectations precisely. The results of this research are that almost the entire gap value between expectations and perceptions has a negative gap value, thus it can be concluded that the quality of service provided by the hospital is considered not able to meet patient expectations as it should. The research results obtained were that the attribute that was considered the best by patients was the comfort condition of the patient room at Padang Sidimpuan General Hospital with a gap value of 2.913979. Meanwhile, the lowest rated attribute lies in officers not ignoring patients when on duty with a gap value of 50.90728975.
Identification of Factors and Variables in Orangutan Habitat Conservation in Central Tapanuli Using DPSIR Approach Budiman, Fahri; Nababan, Esther Sorta Mauli; Aththorick, T. Alief
Journal of Environmental and Development Studies Vol. 6 No. 01 (2025): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v6i01.18152

Abstract

The habitat of the Tapanuli orangutan remains under threat from deforestation, fragmentation, development, and hunting, with only 11,787.7 hectares left. Conservation efforts have not been optimal due to the lack of a systematic approach and synergy among stakeholders. A long-term, data-driven management model integrating social, economic, ecological, and policy aspects is yet to be developed. This study aims to develop a scenario model for conserving the habitat of the Tapanuli orangutan in Central Tapanuli Regency. The method used in this research includes a literature review conducted over one year (November 2022–November 2023), secondary data collection, field surveys, and the DPSIR framework as an analysis tool. Four scenarios were analyzed: Business as Usual (BAU), land conversion threats, area strengthening policies, and habitat rehabilitation. The model was validated using historical data to ensure the accuracy of the results. The findings indicate that, although national and regional policies exist to protect the Tapanuli orangutan, their implementation is often hindered by weak law enforcement, corruption, and resistance from local communities. Thus, protecting the habitat of the Tapanuli orangutan requires a more holistic approach, including enhanced monitoring, forest restoration, community education, the development of sustainable alternative livelihoods, and multi-stakeholder collaboration. Continuous evaluation and strengthening of science-based policies are essential to ensuring the long-term effectiveness of conservation efforts.
Penerapan Simulasi Dalam Menganalisis Sistem Antrean pada Pelayanan Kefarmasian Rawat Jalan Rumah Sakit Advent Medan Chelsea Natali Lumban Gaol; Parapat Gultom; Esther Sorta Mauli Nababan; Muhammad Romi Syahputra
Lentera: Multidisciplinary Studies Vol. 2 No. 1 (2023): Lentera: Multidisciplinary Studies
Publisher : Publikasiku

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57096/lentera.v2i1.30

Abstract

Rumah Sakit Advent Medan sebagai pelayanan kesehatan harus memerhatikan kualitas pelayanan termasuk pada pelayanan kefarmasian. Pelayanan kefarmasian adalah suatu pelayanan langsung dan bertanggung jawab kepada pasien dalam menyediakan obat untuk meningkatkan mutu kehidupan pasien. Pada hasil pengamatan diperoleh bawa rata-rata waktu tunggu sebesar 0,7652 jam atau 45 menit. Sehingga menjadi suatu masalah bagi rumah sakit mengenai sistem antreannya. Tujuan dari penelitian ini adalah untuk mengetahui upaya yang dilakukan Rumah Sakit untuk memperbaiki waktu tunggu dalam antrean. Untuk mengatasi masalah ini, salah satunya adalah melakukan analisis pada sistem pelayanan dengan menggunakan teori antrean dengan disiplin antrean First In First Out (FIFO) yang disimulasikan melalui software ARENA 16.0. Dari hasil simulasi model awal yang rata-rata waktu tunggu sebesar 0,7652 jam atau 45 menit dan utilitas atau tingkat kesibukan sebesar 97,42%. Dengan demikian dibuat simulasi model usulan perbaikan, skenario terpilih yaitu skenario 3 dengan menambahkan 3 pekerja untuk melayani dalam pembuatan obat dan dari hasil simulasi diperoleh rata-rata waktu tunggu sebesar 0,0847 jam atau 5 menit dan utilitas atau tingkat kesibukan sebesar 75,08% sehingga dapat terlihat perbedaan yang signifikan, banyak pasien yang datang dengan pasien yang keluar adalah sama, sehingga semua pelanggan dapat terlayani. Dapat dikatakan pada skenario 3 server tidak sibuk sehingga pelayanan yang diberikan dapat cepat dan baik membuat pasien merasa puas dan pelayanan dapat dikatakan optimal.
Location Models with Multy Criterious Networks (Case Study: The Industrial of Rice Processing in The Batubara District) Gultom, Parapat; Nababan, Esther Sorta Mauli; Marpaung, Jonathan Liviera
Journal of Research in Mathematics Trends and Technology Vol. 4 No. 2 (2022): Journal of Research in Mathematics Trends and Technology (JoRMTT)
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jormtt.v4i2.16121

Abstract

Determining location is a problem encountered in many areas of everyday life. Determining this location becomes complex when many factors are taken into consideration, where one factor and another can conflict. One of the issues that will be discussed in this research is determining the location of the rice processing industry. This problem needs to be studied considering that the opportunity to establish a rice industry in several regions in Indonesia is very high considering that the potential for the main raw material (rice) is very large, as is the rice market where the largest population of the Indonesian nation makes rice the main food ingredient. The case study that will be discussed in this research is the rice processing industry in Batu Bara Regency. Batu Bara Regency is one of the districts/cities in North Sumatra Province which has enormous rice potential. In order to improve the welfare of farmers and provide good quality rice for the community, a Rice Processing Industry is needed. The problem in the rice processing industry is very complex, apart from the seasonal availability of rice raw materials, is the location where the rice processing factory is located. Various criteria need to be considered in this determination relating to the distance of the rice processing industry factory to each source of the main raw material (rice). Determining this location is very complex because it involves multiple criteria. This research will provide a location determination model using a Multi Criteria Network. The criteria used to determine the location of the rice processing industry in Batu Bara Regency are the transportation distance from the raw material center, travel time, and the condition of the road connecting the raw material center to the factory location. Based on the criteria for distance between rice centers and rice processing industrial factories, a route with a total minimum distance score of 0.71 is obtained. Meanwhile, based on travel time, the best route was obtained with a minimum total time score of 1.61. Based on the quality of the road taken, the best route was obtained with a maximum total score of 0.25. By considering the three criteria, the best route was obtained with a total optimum score of 2.96.
Active Role of the Community in Increasing Sustainable Tourism in Sibolangit Village Siringoringo, Yan Batara Putra; Nababan, Esther Sorta Mauli; Hasibuan, Citra Dewi; Sitepu, Suryati; Sujatmoko, Koko
Jurnal Mitra Prima Vol. 7 No. 1 (2025): JURNAL MITRA PRIMA
Publisher : Mitra prima

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sibolangit Village is known as a tourist village because it has a lot of natural potential that can be developed into a tourist destination in Deli Serdang Regency. Some of the tourism potential in Sibolangit Village includes the Taman Wisata Alam Sibolangit, Tangga Seribu, Uruk Sikuda-kuda, Taman Pekabar Injil Pertama GBKP, Goa Sejarah, Pemandian Alam Sibolangit. However, the management of tourist attractions in Sibolangit Village is not yet optimal because human resources in terms of expertise and skills in the field of tourism are still minimal, causing the tourist attraction to be unattractive and ultimately the number of visitors does not experience a significant increase. Carry out community service activities by holding training to improve skills in managing tourism businesses, marketing and customer service in Sibolangit Village. This training also covers aspects of sustainability, making the community the guardian and custodian of local heritage. Apart from that, a Tourism Awareness Group (Pokdarwis) will be formed as a representative of the Sibolangit Village community in developing tourism.
Logistics distribution optimization model using multi-depot capacitated vehicle routing problem Rajagukguk, Angie Maretha; Esther Sorta Mauli Nababan; Parapat Gultom
Desimal: Jurnal Matematika Vol. 8 No. 2 (2025): Desimal: Jurnal Matematika
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/cazand26

Abstract

Logistics distribution is vital for enhancing the efficiency and competitiveness of Indonesia. This research focuses on logistics distribution by introducing temporary depots in strategic locations to address the growing demands of the rapidly expanding e-commerce and transportation industries. As consumers increasingly expect faster and more efficient deliveries, logistics systems must adapt with flexible solutions. Temporary depots offer a practical approach to reducing delivery time, optimizing vehicle routes, and improving service efficiency to meet modern distribution challenges. The Multi Depot Vehicle Routing Problem model developed focuses on optimizing depot locations, vehicle allocation, and delivery routes while minimizing total distribution costs, including shipping, vehicle usage, depot construction, and travel from the distribution center to temporary depots. This research addresses how to minimize operational distribution costs, considering logistical demand, vehicle capacity, region visits, and flow conservation, while adhering to non-negative and binary constraints. The model aims to contribute to more efficient logistics planning, operational cost savings, and enhanced supply chain sustainability in Indonesia.
Application Of Game Theory In Determining Optimum Marketing Strategy In Marketplace Intan Permata; Esther Sorta Mauli Nababan
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 2 No. 2 (2023): Oktober : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v2i2.1336

Abstract

The trend of shopping in society is getting shifted, marked by the presence of the growing marketplaces and e-commerce. There are so many choices of marketplaces that can be easily accessed by the society. By the marketplaces vary, there would be many things to prepare by every marketplace to win the competition and always maintain the existence. Therefore, they must think and use the effective marketing strategy. The game theory is one of the ways that can be used to analyze the marketing strategy. The game theory is a mathematics model used in a conflict or competition among various interests that meet each other as competitors. Basically, the theory is a study of strategy interaction among the players to determine the best strategy and the obtained score. One of basic elements of the game theory is solving every case of the game theory where the pay-off matrix is shown in a game matrix table. The data of game between Shopee and Tokopedia obtained the optimum score which was 2.4443. Shopee and Bukalapak obtained the optimum score which was 6. Meanwhile, Tokopedia and Bukalapak obtained the optimum score which was 8.9925. In the Shopee, Tokopedia, and Bukalapak competition, the Nash equilibrium point is located at the point () with a pay off value (64,56,43), Shopee with a discount voucher strategy (), Tokopedia with a Product strategy (), and Bukalapak with a promotion strategy () which is the optimal strategy for each player.
A Improvement of efficiency in Tanjung Marolan farmers harvest process with thresher technology Harahap, Agus Salim; Nababan, Esther Sorta Mauli; Siahaan, Nelson Manumpak Siahaan; Ziliwu, Meyman Sokhi
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.391 KB) | DOI: 10.32734/abdimastalenta.v4i2.3195

Abstract

Human power which is relied on every harvest season becomes a big concern for farmers. Farmers in Ajibaho Village, Dusun VII Tanjung Marolan still utilize a simple equipment with human power to harvest rice. Some processes of harvest require longer time. It is started from cutting rice stalks, collecting rice stalks, and threshing rice by hitting it on a drum to thresh the rice from the stalks. After that, the rice was collected, put into white sack, and delivered to houses. This condition also depends on the weather which becomes longer when it is rain or sunny. A simple technology which uses thresher can be a good solution to achieve an efficiency of harvest process specially for the threshing process. The application of thresher machine is able to give a positive impact to increase harvest, to decrease daily cost, and to effectuate harvest process
Active Learning Training with Mathematics Tools at SD HKBP Pembangunan 3 Medan Siringoringo, Yan Batara Putra; Nababan, Esther Sorta Mauli; Manurung, Asima; Marbun, James Piter; Napitupulu, Normalina; Marpaung, J.L.
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2020): ABDIMAS TALENTA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (579.937 KB) | DOI: 10.32734/abdimastalenta.v5i2.5086

Abstract

Education is an attempt by the Government to increase the country's potential to be able to compete with other countries that are experiencing very rapid development. The development of education will have an influence on the life of the local community, that is, it can affect various aspects of life, be it social, economic, cultural, religious, language and also the environment. The extent of the influence of educational development on aspects of life can be studied independently. Besides that, education also plays a major role in expanding employment opportunities, encouraging activities of supporting industries, introducing natural and cultural beauty that is inseparable from a sense of increasing brotherhood in the national and international environment. This is because education itself creates multiple economic impacts, namely direct, indirect, and secondary impacts, which provide opportunities for the growth of businesses and the role of local communities in the education sector. This research will discuss about Active Learning Training with Mathematics Tools at SDS HKBP Pembangunan 3 Medan. The result achieved is that schools are able to provide effective services online in the face of changing times caused by Covid-19 and can provide more information regarding the location of tourist objects that will be traversed by local and foreign tourists.
Co-Authors Abdul Munif Aghni Syahmarani Agus Salim Harahap Arbia, Rahmad Asima Manurung Aththorick, T. Alief Barus, Tania Aldera Hartanta Putri Budiman, Fahri Chelsea Natali Lumban Gaol Elly Rosmaini Elviana, Arin Erlangga Erlangga Febriani Safitri Hasibuan, Citra Dewi Herianto, Tulus Joseph Hesti Wahyuningsih Hrp, Hafizah Miranda Putri Intan Permata Jonathan Liviera Marpaung Marbun, James Piter Marbun, Monika Mardiningsih Mardiningsih Marpaung, Dinda Oktari Putri Marpaung, J.L. Munawwar Khalil, Munawwar Nanda Surya Jatnika Nardi manurung Nasution, Putri Khairiah Natalia, Desy Denada Nelly Anggaraini Rajagukguk Nur Aisyah Parapat Gultom Parapat Gultom Rajagukguk, Angie Maretha Ricky Ricky Saiful Adhar Sawaluddin Sawaluddin, Sawaluddin Sembiring, Pramio Garson Siahaan, Nelson Manumpak Siahaan, Nelson Manumpak Siahaan Siddik, Fajar Erin Siringoringo, Yan Batara Putra Sitepu, Suryati Sitompul, Weny Grace Sujatmoko, Koko Suryati Sitepu Suyanto Suyanto Syahputra, Muhammad Romi Ternala Alexander Barus Tetti Erina Siregar Tulus Zahedi . Ziliwu, Meyman Sokhi