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All Journal Wahana Matematika dan Sains Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat JURNAL LENTERA BISNIS MES: Journal of Mathematics Education and Science JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Mattawang: Jurnal Pengabdian Masyarakat Bulletin of Community Engagement Journal Of Human And Education (JAHE) Jurnal Ilmu Pendidikan dan Sosial Abdi Jurnal Publikasi Jurnal Pengabdian Bukit Pengharapan Jurnal Kedokteran Methodist
Sirait, Debora
Universitas HKBP Nomensen Pematangsiantar
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Analisis Pengendalian dan Pengoptimalan Biaya Persediaan Barang Dagang Menggunakan Program Dinamik Deterministik Pada PT. Rajawali Nusindo Cabang Pematangsiantar Harefa, Asrianita; Sirait, Debora Exaudi; Sinaga, Christa Voni Roulina
JURNAL PEMBELAJARAN DAN MATEMATIKA SIGMA (JPMS) Vol 1, No 2 (2015)
Publisher : Fakultas Keguruan dan Ilmu pendidikan (FKIP) Universitas Labuhan Batu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpms.v8i2.3305

Abstract

Masalah persediaan merupakan salah satu masalah utama yang harus dipecahkan oleh perusahaan, salah satu upaya untuk mengantisipasi masalah persediaan ini adalah dengan memperhatikan sistem pengendalian persediaan, seperti kelebihan atau kekurangan persediaan. Berdasarkan hal tersebut, maka diperlukan suatu metode untuk menentukan jumlah persediaan dengan cara yang benar agar perusahaan dapat menentukan kebijakan persediaan yang optimal. Salah satunya seperti masalah persediaan yang dihadapi oleh PT. Rajawali Nusindo Cabang Pematangsiantar. Penelitian ini bertujuan untuk menentukan jumlah barang yang seharusnya dipesan oleh perusahaan supaya diperoleh biaya yang optimal selama satu tahun dengan menggunakan program dinamik deterministik. Program dinamik deterministik adalah teknik matematika yang digunakan untuk mengoptimalkan pengambilan keputusan bertahap. Hasil penelitian menunjukkan bahwa jumlah persediaan barang yang akan mengoptimalkan biaya persediaan selama periode Maret 2021–Februari 2022 berturut-turut sebanyak untuk bio ATP KSS 10 yaitu; 30, 0, 766, 0, 616, 616, 0, 0, 0, 0, 0, dan 0. Untuk ambroxol syrup yaitu: 250, 50, 686, 50, 33.058, 2.000, 5.012, 836, 200, 0, 200, dan 0. Sedangkan untuk 10’s yaitu; 72, 72, 2.952, 43.200, 0, 2.952, 9.228, 0, 2.016, 2.952, 1.224, dan 72 (dalam satuan unit). Sistem pengendaliaan persediaan barang dengan pemrograman dinamik deterministik lebih efisien dan dapat menekan biaya yang harus dikeluarkan oleh perusahaan untuk persediaannya dengan selisih 22,6% dari sistem yang digunakan perusahaan.Kata Kunci: Matematika, Persediaan, Pemrograman Dinamik Deterministik.
Penerapan Metode Fuzzy Mamdani Dalam Menentukan Persediaan Beras Tahun 2023 Yeni Sinaga; Debora Exaudi Sirait; Juli Antasari Sinaga
Jurnal Ilmu Pendidikan dan Sosial Vol. 2 No. 3 (2023): Oktober
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/jipsi.v2i3.442

Abstract

Indonesia is an agricultural country that relies heavily on agriculture, especially the production of rice as a staple food. The government has an important role in maintaining food security through the Logistics Affairs Agency (BULOG). Perum BULOG must anticipate uncertainty in rice demand and ensure sufficient stock. Fuzzy logic methods, especially the Mamdani Method, are used to optimize rice supplies. This research is a quantitative approach with descriptive methods, describing the characteristics of the research object without relationships or comparisons with other variables. Fuzzy logic methods, especially the Mamdani Method, are used to optimize rice supplies. This research aims to apply the Fuzzy Mamdani Method in determining the amount of rice inventory at Perum BULOG on Jl. Asahan.The centroid method is used to calculate z values ​​based on the results of rule aggregation. So, the z value (inventory) based on the Mamdani method with input x 10044820 and y 936000 is 805086. The results of this defuzzification indicate that inventory is "High" at a level of around 805086. The Mamdani method produces rice supplies of around 805,086 kg based on income and distribution. Uncertainty related to fluctuations in income and distribution.
Analisis Pengendalian Persediaan Barang Menggunakan Metode EOQ Jonatan Persada Siregar; Rektor Sianturi; Debora Exaudi Sirait
Jurnal Ilmu Pendidikan dan Sosial Vol. 2 No. 3 (2023): Oktober
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/jipsi.v2i3.445

Abstract

The aim of this research, based on the problem formulation above, is to find out that inventory management by using the Ecolnolmic Order Quantity (EOQ) met mode can minimize the total inventory costs UMKM Home Industry Rumah Tempe Asli HB Pematangsiantar. This thesis research uses a quantitative descriptive method. The method used in controlling tempe goods inventory is the EOQ method. The EOQ method is a inventory management technique carried out by the company by determining the most efficient inventory amount of goods and producing balanced processing costs and storage costs, so that The company can minimize inventory costs. From the results of research using the EOQ method, the total inventory carried out with the EOQ metdown is 80.179 pcs with a purchase frequency of 22 times. The amount of security stock required by UMKM Home Industry Rumah Tempe Asli HB Pematangsiantar is 8.200 pcs. Total inventory using the EOQ method is IDR Rp1.122.421. EOQ meting can reduce the costs of providing merchandise more or can be said to be efficient if applied to UMKM Home Industry Rumah Tempe Asli HB Pematangsiantar. In other words, the inventory control carried out by the company is still not yet optimal. By using the EOlQ met mode in managing mobile inventory, Rumah Tempe Asli HB can optimize the cost of mobile inventory.
Analisis Pengendalian Persediaan Obat Dengan Menggunakan Metode Analisis ABC, EOQ dan Reorder Point (Rop) (Studi Kasus: Rumah Sakit Umum Daerah (RSUD) Dr. Djasamen Saragih Pematangsiantar) Bintang Sri M Siregar; Rektor Sianturi; Debora Exaudi Sirait
Jurnal Ilmu Pendidikan dan Sosial Vol. 2 No. 4 (2024): Januari
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/jipsi.v2i4.453

Abstract

Inventory is one of the most important things in a company, especially in the hospital industry, in providing drug supplies in order to provide good services. So inventory contro is needed to avoid running out and excess stock of drugs. The aim of this research is to find out the grouping of drugs based on their investment value, find out the optimum order quantity for each drug and find out the time to order each drug. The research method used by researchers uses quantitative methods, ABC, EOQ and ROP analysis methods. This research was conducted at RSUD Dr. Djasamen Saragih Pematangsiantar. From the research resuts, the ABC analysis method shows that 14 types of group A drugs (23.3%) use a budget of 69% of the total drug budget usage, 13 types of group B drugs (21.7%) use a budget of 22%. Of the total use of the drug budget and types of group C drugs, 33 types (55%) use a budget of 9% of the total drug budget use. By analyzing the Economic Order Quantity (EOQ) method, the optimum number of drugs was obtained for group A from 31-2,651 items, group B starting from 6-2,438 items and group C starting from 8-5,527 items. Meanwhile, with ROP analysis, the drugs reordered for group A range from 16-851 items, group B starts from 1-398 items and group C starts from 1-819 items.
Analisis Perpindahan Penggunaan Merek Handphone Dikalangan Mahasiswa Menggunakan Rantai MARKOV (Studi Kasus: Mahasiswa Universitas HKBP Nommensen Pematang Siantar Tahun 2019) Ruth Preccilya Situmorang; Debora Exaudi Sirait; Juli Antasari Sinaga
Jurnal Ilmu Pendidikan dan Sosial Vol. 2 No. 4 (2024): Januari
Publisher : CV Putra Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58540/jipsi.v2i4.454

Abstract

The aim of the research is to form a Markov Chain from switching cellphone brands among UHKBPNP students. This research method uses quantitative methods with a survey research type. The data collection technique used was by collecting questionnaires. The results of research and discussion of cellphone brand switching among students show that the cellphone brand that has the most loyal users is Oppo (40.59%). Meanwhile, the cellphone brand that uses the least loyalty is iPhone (0.4%). The Xiaomi cellphone brand was able to beat Vivo, Realme, Redmi, iPhone and there was quite intense competition between the Redmi and Vivo brands.
Analisis Antrian dalam Pengoptimalan Pelayanan Stasiun Pengisian Bahan Bakar Umum (SPBU) dengan menggunakan Model Antrian Multi Channel Single Phase Siallagan, Iren Laurensia; Sirait, Debora Exaudi; Br Sinaga, Juli Antasari
Bulletin of Community Engagement Vol. 4 No. 2 (2024): Bulletin of Community Engagement
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/bce.v4i2.1156

Abstract

Queues often occur in public services, one of which is gas station 14.211.203 Jl. D.I Panjaitan No.49 Pematangsiantar, where long queues occur at service facilities, especially in the type of pertalite fuel for motorcycle vehicles. The purpose of this study was to determine the analysis of the queuing system in optimizing services at SPBU 14.211.203 JL. D.I Panjaitan No.49 Pematangsiantar by using a multi-channel single phase queuing model. This type of research is descriptive quantitative. The queuing model applied to this gas station is a single channel single phase model. Based on the results of the study, it is known that with the queuing model applied, it can be said that the level of service at SPBU 13.211.203 is not optimal enough because the busy system utility (p) has a high percentage of the average number of customers waiting in the queue is 3 to 4 customers, The average time spent waiting in the queue is between 1 to 3 minutes, For the average time spent by customers while being served is between 2 to 3 minutes. For this reason, optimization suggestions are given that can be done, namely by using a single phase multi-channel queuing model which uses one service line with two service facilities, then the level of busy service facilities has a smaller percentage of busyness, which is below 50 %, the average level of busyness is below 50 %. Keywords: Queuing, Multi Channel Single Phase, Pertalite
Penerapan Sistem Pendukung Keputusan Analytical Hierarchy Process (AHP) dalam Pemilihan Dosen Terbaik di Universitas HKBP Nommensen Pematangsiantar Dortua Benjamin Pola Silitonga; Juli Antasari Br Sinaga; Debora Exaudi Sirait
Bulletin of Community Engagement Vol. 4 No. 3 (2024): Bulletin of Community Engagement
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/bce.v4i3.1598

Abstract

This research aims to apply a decision support system using the Analytical Hierarchy Process (AHP) method in selecting the best lecturers at HKBP Nommensen Pematangsiantar University. Selection of the best lecturers is an important process that can affect the quality of education and the reputation of the institution. The AHP method was chosen because of its ability to handle complex decisions involving many criteria. The results of this research show that the AHP method can provide an objective and systematic solution in determining the best lecturers based on educational, research, teaching and ethical criteria. From the results of this research using the AHP method, Dr. Juli Antasari Sinaga., M.Pd as the best lecturer with the sample taken is a permanent lecturer at FMIPA, HKBP Nommensen University, Pematangsiantar. By implementing this decision support system, it is hoped that HKBP Nommensen Pematangsiantar University can increase transparency and accountability in the process of selecting the best lecturers, as well as encourage improvements in the quality of teaching and research in the campus environment.  
Analisis Pengendalian Persediaan Bahan Baku Kedelai pada Home Industry Tahu Tukiran Artomoro Yosua Wijaya Wardoyo; Juli Antasari Br Sinaga; Debora Exaudi Sirait
Bulletin of Community Engagement Vol. 4 No. 1 (2024): Bulletin of Community Engagement
Publisher : CV. Creative Tugu Pena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51278/bce.v4i1.1600

Abstract

This research aims to determine the inventory control of soybean raw materials applied to the Tahu Tukiran Artomoro Home Industry, to determine the number of orders for economical soybean raw material supplies at the Artomoro Tahu Tukiran Home Industry. The type of research used in this research is descriptive comparative research method. The data processed is in the form of an inventory report on the purchase and use of soybean raw materials at the Tahu Tukiran Artomoro Home Industry in 2023. The data analysis technique used in this research is a tabular approach, and using the Economic Order Quantity (EOQ) method, Reorder Point calculation techniques. (ROP), Safety Stock, Total Inventory Cost. Based on the results of research on the formula approach model using the EOQ method, the economic order quantity for soybean raw materials was obtained, namely 2,335 kg, with an ordering frequency of 14 times, safety stock of 2,715 kg, ROP can be carried out when the soybean raw materials in the warehouse are 123 kg , and total inventory costs of IDR 341,030. The conclusion of this research shows that the application of the Economic Order Quantity (EOQ) method shows a more economical order quantity compared to the method used by the Tahu Tukiran Artomoro Home Industry.  
SOSIALISASI IMPLEMENTASI KURIKULUM MERDEKA BERDASARKAN PROFIL PELAJAR PANCASILA Yanti, Febri; Silalahi, Mastiur Verawaty; Situmorang, Masni Veronika; Sirait, Debora Exaudi; Siagian, Gunaria
Jurnal Pengabdian Bukit Pengharapan Vol. 4 No. 2 (2024): Spesial Issue
Publisher : LPPM Institut Teknologi dan Bisnis Kristen Bukit Pengarapan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61696/jurdian.v5i1.632

Abstract

Teachers at SD Negeri 064020 Medan have the problem of a lack of knowledge about implementing the independent curriculum, especially for the Pancasila student profile. Alternative solutions to the problems faced by teachers at SD Negeri 064020 Medan so that they can develop and increase their knowledge and can implement an independent curriculum at the school. By socializing it to teachers at SD Negeri 064020 Medan. The target outcomes that will result from the solution are: (1). Producing teachers who are able to increase knowledge and are able to implement an independent curriculum based on the Pancasila student profile, (2). The results of this program can later be published in national journals. After the socialization has been carried out to the teachers at State Elementary School 064020 Medan, the proposing team will carry out an evaluation by giving assignments and questionnaires to the teachers at State Elementary School 064020 Medan to fill in whether the results of the socialization have met the expected solution to the problems of the State Elementary School teachers. 064020 Medan. The aim of this activity is apart from being an effort by the Government to help the needs of the community, it also proves that the lecturers and HKBP Nommensen Pematangsiantar University are present and able to help with complaints and provide solutions to the community, especially teachers at SD Negeri 064020 Medan so that the vision of becoming a Superior and Competitive University is achieved as well as fulfilling the Tridharma Duties for Lecturers who provide community service.
HUBUNGAN KARAKTERISTIK INTERNAL DAN EKSTERNAL TERHADAP TINGKAT KETERAMPILAN DAN PRODUKTIVITAS USAHA WANITA PENGOLAH IKAN ASIN PASCA COVID-19 Debora Exaudi Sirait; Ria Retno Dewi Sartika Manik
JURNAL LENTERA BISNIS Vol. 13 No. 3 (2024): JURNAL LENTERA BISNIS, SEPTEMBER 2024
Publisher : POLITEKNIK LP3I JAKARTA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34127/jrlab.v13i3.1243

Abstract

The purpose of this study was to analyze the profile of coastal women's businesses in salted fish processing, to study coastal women's businesses in salted fish processing for increasing their family's income and economy and to study the relationship between external and internal factors that influence (support and inhibit) and empowerment efforts through coaching in salted fish processing in Nenas Siam Village, Medang Deras District, Batu Bara Regency. The method used was qualitative descriptive. The data collected in this study consisted of two types of primary data and secondary data obtained by: (1) using a questionnaire that had been tested for validity and reliability, (2) interviews using questionnaires were conducted by asking and answering questions directly to selected respondents to obtain primary data, (3) secondary data collection was carried out by reviewing literature related to and relevant to this study and (4) conducting observations, namely direct observations in the field. The collected data were tabulated and analyzed using non-parametric statistical tests (Spearman Rank Correlation).
Co-Authors Bintang Sri M Siregar Dortua Benjamin Pola Silitonga Erwin Sirait Erwin Sirait, Erwin Febri Yanti Girsang, Rifka Sapriani Gultom, Binsar Tison Handoco, Ewin Harefa, Asrianita Imelda Sirait Jonatan Persada Siregar Juli Antasari Br Sinaga manik, ria retno Manik, Ria Retno Manik, Rischi Sugiarti Manulang, Ady Frenly Masni Veronika Situmorang Pakpahan, Edwin Purba, Switamy Agnitha Purba, Switamy Angnitha Rani Farida Sinaga Rektor Sianturi, Rektor Retno, Ria Ruth Preccilya Situmorang Siagian, Gunaria Siallagan, Iren Laurensia Sibarani, Ricky Fajar Silalahi, Mastiur Verawaty Simarmata, Justin Eduardo Simbolon, Lolyta Damora Sinaga, Christa Voni Roulina Situmorang, Masni Veronika Tambunan, Lois Tarigan, Juliyanti Yeni Sinaga Yosua Wijaya Wardoyo