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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 Jurnal Ilmu Pendidikan dan Sosial Abdi Jurnal Publikasi Jurnal Pengabdian Bukit Pengharapan
Sirait, Debora
Universitas HKBP Nomensen Pematangsiantar
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Nursing Public Health Social Sciences Other

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PENERAPAN TEORI PERMAINAN DALAM MENENTUKAN STRATEGI PEMASARAN OPTIMUM PADA PRODUK KECANTIKAN debora exaudi sirait
Wahana Matematika dan Sains: Jurnal Matematika, Sains, dan Pembelajarannya Vol. 15 No. 3 (2021): Desember 2021
Publisher : Universitas Pendidikan Ganesha

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (285.853 KB) | DOI: 10.23887/wms.v15i3.39283

Abstract

Akibat dampak Covid-19 banyak penduduk Indonesia yang terkena dampak PHK, sehingga mengambil ahli untuk mengikuti MLM produk Oriflame dan Jafra dimana produk kecantikan hal yang paling laris dimasa ini. Teori permainanz(Game Theory) merupakan teorizyangzmenggunakan pendekatan matematiszdalam merumuskanzsituasi persaingan danzkonflik antara berbagaizkepentingan. Teori inizdikembangkan untuk menganalisazproses pengambilanzkeputusan yaituzstrategi optimumzdari situasi-situasizpersaingan yangzberbeda-beda danzmelibatkan duazatau lebih kepentingan.Adapun batasan masalahnya dipilih menjadi 5 batasan masalah, yaitu: Produk,Harga,Lokasi, Promosi,Pelayanan.Dari hasil uji reliabilitas kuisioner pendahuluan dengan menggunakan software SPSS 19.0 didapatkan nilai  = 0.820.  Dengan strategi murni diperoleh titik pelana (saddle point) karena nilai maksimin  sama dengan nilai minimaks sehingga strategi murni merupakan strategi optimalnya. Oleh karena itu, dengan strategi murni telah didapatkan strategi  optimal dari pemain Jafra dan Oriflame. Dimana strategi optimal sebesar 10 pada (X1,Y2), Jafra menggunakan strategi produk dan Oriflame menggunakan strategi Harga.  
IMPLEMENTASI TEORI PERMAINAN PADA STRATEGI PEMASARAN PRODUK KECANTIKAN ORIFLAME DAN JAFRA Debora Exaudi Sirait
MES: Journal of Mathematics Education and Science Vol 7, No 1 (2021): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i1.4513

Abstract

Due to the impact of Covid-19, many Indonesians have been affected by layoffs, so they have switched to taking part in the multi-level marketing program of Oriflame and Jafra products, both of which are the best-selling beauty products today. This study examines the marketing strategy used by these two beauty producers using game theory. Game theory is a theory that uses a mathematical approach in formulating situations of competition and conflict between various interests. This theory was developed to analyze the decision-making process, namely the optimum strategy for different competitive situations and involving two or more interests. The problem boundaries were chosen to be 5 aspects of the problem, namely: product, price, location, promotion, and service. From the results of the preliminary questionnaire reliability test using SPSS 19.0 software, a value of 0.820 was obtained. With a pure strategy, a saddle point is obtained because the maximum value is the same as the minimum value, so that the pure strategy is the optimal strategy. Therefore, with a pure strategy, optimal marketing strategies have been obtained from both manufacturers, namely Jafra and Oriflame. Where Jarfa producers use products (variations) as their marketing strategy while Oriflame producers use price as their marketing strategy.
PENYELESAIAN MASALAH TRAVELLING SALESMAN PROBLEM DENGAN MENGGUNAKAN BAHASA PEMROGRAMAN PASCAL Debora Exaudi Sirait; Justin Eduardo Simarmata
MES: Journal of Mathematics Education and Science Vol 6, No 1 (2020): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v6i1.3126

Abstract

Dalam hal pendistribusian barang, setiap kantor pos pasti memiliki wilayah distribusi tujuan. Begitu juga dengan Kantor Pos di Jl. Sutomo no. 2 Pematangsiantar, dimana mereka bertugas mendistribusikan barang di wilayah Kota Pematangsiantar yang merupakan puncak simalungun. Agar barang tersebut dapat didistribusikan dengan cepat maka diperlukan rute yang efisien dari segi jarak. Pendistribusian barang dimulai dan diakhiri di Kantor Pos kota Pematangsiantar. Masalah tersebut dapat dikategorikan sebagai Travelling Salesman Problem (TSP) yaitu suatu masalah dimana seorang salesman harus mengunjungi semua daerah yang setiap daerahnya hanya dikunjungi satu kali, dan harus kembali kekampung halaman. Tujuan dari penelitian ini adalah untuk mengetahui waktu tersingkat dalam menyampaikan pesanan, membantu perusahaan dalam menekan biaya operasional, mendapatkan jalur terpendek menggunakan dua cara yaitu dengan cara perhitungan manual dan bahasa pemrograman sehingga menjadi bahan acuan bagi mahasiswa Universitas HKBP-N Pematangsiantar, Kantor Pos, serta perbandingan efisiensi menggunakan pascal.
ANALISIS LOGIKA FUZZY MAMDANI DALAM OPTIMISASI HARGA JUAL JAGUNG Debora Exaudi Sirait; Binsar Tison Gultom
MES: Journal of Mathematics Education and Science Vol 7, No 2 (2022): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i2.5245

Abstract

At this time the type of crop that is most often planted is corn because it is a plant that is easier to grow than other secondary crops and the cost is also relatively less and the process is not complicated. The profit from the harvest depends on the selling price and the capital used. So that there is uncertainty in determining the profits of the farmer. Given the uncertainty, it is necessary to optimize the selling price. To optimize the selling price, fuzzy logic can be used. Fuzzy Mamdani is a method that is very flexible and has tolerance for existing data or is usually referred to as secondary data. The data obtained is data collected from Uluan District which is known by the local government in Uluan District. Where the data is data from the community in each village starting for 12 periods of planting corn. By using the Mamdani method, the optimum selling price in the first period of 2012 was Rp. 2,644,-.
PEMANFAATAN APLIKASI GEOGEBRA DALAM PEMBELAJARAN KALKULUS I PADA MAHASISWA PROGRAM STUDI PENDIDIKAN MATEMATIKA, UNIVERSITAS TIMOR Justin Eduardo Simarmata; Debora Exaudi Sirait
MES: Journal of Mathematics Education and Science Vol 6, No 1 (2020): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v6i1.2624

Abstract

To find out the increase in the ability of mathematical understanding in learning calculus I semester II students of mathematics education study programs on the subject of functions and limits, we need a learning media in the form of Geogebra applications. Geogebra applications is one of the calculus I learning media that can be used to demonstrate or visualize mathematical concepts as well as a tool to construct concepts mathematically. The sample in this study was 54 seconds semester students of the mathematics education study program, Faculty of Education, University of Timor using purposive sampling techniques. The method used in this study is a pre-experimental method with one group pretest-posttest design. Analysis of the data in this study used the non-parametric Mann Whitney test. Based on the results of the N-gain score test, it shows that the average N-gain score is 58.4251 or 58.4%, which results are included in the quite effective category. Thus, the use of Geogebra applications in learning calculus I in the second-semester students of mathematics education study programs is quite effective in improving students' mathematical understanding of learning calculus I.
Quick Training on Answering Mathematics National Examination for Algebraic Forms in Junior High School Kartika 1-4 Debora Sirait
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2021): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (399.994 KB) | DOI: 10.32734/abdimastalenta.v6i2.6167

Abstract

The National Examination, usually abbreviated as UN, is a system of evaluating the national primary and secondary education standards as well as the equality of education quality between regions carried out by the Education Assessment Center. Algebra is a part of a large field of mathematics, together with number theory, geometry and analysis. In its most common form, algebra is the study of mathematical symbols and their rules. The method used in interactive learning was chosen to deliver appropriate training which was carried out in three stages, namely the field exploration stage, the implementation stage, and the evaluation stage. With this method, it is hoped that teachers and students can see quick tricks on solving the National Mathematics Examination questions.
E-Learning of Information Technology for Desa Pagar Pinang Debora Sirait
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2022): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1195.561 KB) | DOI: 10.32734/abdimastalenta.v7i1.6770

Abstract

The importance of information technology and technology is felt to be important to empower villages. So that it is expected to be able to maximize the use of cross-sectoral development ranging from the economy, health, education, to local government management. Information Technology has been widely used to support business processes that occur in companies, both in the economic and banking fields. With the presence of applications and services for e-business, e-commerce, e-banking and others. The need for time and cost efficiency causes every business person to feel the need to apply information technology in the work environment. In agricultural economics, farm yields, crop yields, or very often abbreviated as yields, are quantities that describe the amount of agricultural harvested products obtained in one area of ​​land in one production cycle.
SOSIALISASI MANAJEMEN KUALITAS AIR DALAM UPAYA PENGENDALIAN PENCEMARAN PERAIRAN Ria Retno; Ewin Handoco; Masni Veronika Situmorang; Mastiur Verawaty Silalahi; Gunaria Siagian; Debora Exaudi Sirait
Abdi Jurnal Publikasi Vol. 1 No. 2 (2022): November
Publisher : Abdi Jurnal Publikasi

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

Abstract

Pencemaran dapat terjadi karena penggunaan sumber daya pada pembangunan. Lingkungan dapat dikatakan tercemar jika dimasuki bahan pencemar yang mengakibatkan gangguan pada makhluk hidup yang ada di dalamnya. Tujuan pengabdian kepada masyarakat ini dilakukan agar kelompok masyarakat dapat mengetahui bagaimana menganalisis kualitas air untuk melihat apakah perairan tersebut mengalami pencemaran. Metode yang digunakan adalah metode presentasi dan demonstrasi. Sosialisasi tentang kajian kualitas air dalam upaya pengendalian pencemaran perairan di Kabupaten Batu Bara ini sangat bermanfaat terhadap kelompok masyarakat, hal ini terbukti dari semangat kelompok masyarakat yang cukup antusias dalam mengikuti sosialisasi mulai dari awal sampai akhir.
PEMODELAN MATEMATIKA PADA KASUS INFEKSI COVID-19 Debora Exaudi Sirait; Erwin Sirait; Imelda Sirait
MES: Journal of Mathematics Education and Science Vol 8, No 2 (2023): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v8i2.7189

Abstract

One of the viruses that cause infectious diseases is the corona virus. Corona viruses can cause more serious diseases such as the Severe Acute Respiratory Syndrome-Corona Virus which was epidemic in 2003, the Middle East Respiratory Syndrome-Corona Virus outbreak in 2012 and the 2019 Coronavirus Disease which was epidemic at the end of 2019. The ordinary linear differential equation is an equation differential in which all derivatives appear in linear form and no coefficients depend on the dependent variable. The coefficient can be a function of the independent variable, in which case the differential equation is a linear differential equation with changing coefficients. Based on the relatively large number of cells that are susceptible to infection (S), over time it will decrease and towards a zero value against high immunity, and people under surveillance and patients in care (E) with time will decrease towards high immunity. Meanwhile, the number of infected cells (I) at one time will reach a highest point, which indicates the maximum number of infected cells and gradually decreases with time towards a high increase in immunity. Because fewer S, E, and I are infected, the amount of virus in the body (R) also decreases.
SOSIALISASI CARA BUDIDAYA IKAN YANG BAIK (CBIB) BAGI BUDIDAYA UDANG DI DESA MESJID LAMA KECAMATAN TALAWI KABUPATEN BATU BARA Ria Retno; Masni Veronika Situmorang; Mastiur Verawaty Silalahi; Gunaria Siagian; Debora Exaudi Sirait
Abdi Jurnal Publikasi Vol. 1 No. 6 (2023): Juni
Publisher : Abdi Jurnal Publikasi

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

Abstract

Negara terbesar yang mengimpor udang (Litopenaeus vannamei) adalah Amerika Serikat dan Indonesia. Cara budidaya ikan yang baik (CBIB) adalah cara memelihara dan/atau membesar kan ikan serta memanen hasilnya dalam lingkungan yang terkontrol shg memberikan jaminan keamanan pangan dari pembudidayaan dengan memperhatikan sanitasi,obat ikan, pakan dan bahan kimia serta biologis. Kegiatan sosialisasi dilaksanakan di salah satu kolam milik pembudidaya kerapu di Desa Mesjid Lama Kecamatan Talawi yang diikuti oleh 30 peserta. Sosialisasi tentang Cara Budidaya Ikan Yang Baik (CBIB) bagi pembudidaya udang dan kerapu di Desa Mesjid Lama sangat bermanfaat, hal ini terbukti dari semangat masyarakat yang antusias dalam mengikuti sosialisasi mulai dari awal sampai akhir.
Co-Authors Ady Frenly Manulang Bintang Sri M Siregar Christa Vonni R. Sinaga Dortua Benjamin Pola Silitonga Erwin Sirait Erwin Sirait Febri Yanti Girsang, Rifka Sapriani Gultom, Binsar Tison Handoco, Ewin Harefa, Asrianita Imelda Sirait Jonatan Persada Siregar Juli Antasari Br Sinaga Lolyta D. Sinaga manik, ria retno Masni Veronika Situmorang Rani Farida Sinaga Rektor Sianturi, Rektor 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 Switamy A. Purba Switamy Angnitha Purba Yeni Sinaga Yosua Wijaya Wardoyo