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GAME THEORY APPLICATION ON ONLINE TRANSPORTATION COMPANY AND DRIVER INCOME LEVELS DURING THE PANDEMIC Sinaga, Marlina Setia; Arnita, Arnita; Rangkuti, Yulita Molliq; Febrian, Didi
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 16 No 2 (2022): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Online motorcycle taxi drivers are a group of people who are economically affected by the Covid-19 pandemic. This study aimed to provide a balanced choice strategy for drivers and companies. Game theory was applied to conflict of interest situations as a research method. Choices for online transportation companies and drivers are analyzed and arranged in a payoff table until they reach the saddle point. Simulation software as an illustration of a balanced model. This research resulted in driver diligence and incentive strategies as optimal strategies for drivers and companies. If drivers improve performance by choosing a driver diligence strategy, the driver's expectations of getting incentives will be more realistic. Meanwhile, for the company, when the driver's diligence increases, the choice of providing incentives will provide balanced benefits as well.

DETEKSI DINI GANGGUAN MENTAL EMOSIONAL MAHASISWA PROGRAM SARJANA FAKULTAS MIPA UNIVERSITAS X Febrian, Didi; Ginting, Rafael Lisinus; Harliana, Putri; Farhana, Nurul Ain
PSIKOLOGI KONSELING Vol. 17 No. 2 (2024): Jurnal Psikologi Konseling
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/psikologikonseling.v17i2.69420

Gangguan mental emosional (GME) merupakan suatu kondisi dimana seseorang mengalami perubahan emosional yang jika terus berlanjut akan berkembang menjadi keadaan patologis. Mahasiswa berada pada masa yang rentan mengalami GME. Gangguan mental emosional dapat mempengaruhi kehidupan mahasiswa dan mengakibatkan penurunan nilai akademik. Hambatan dalam penyelesaian permasalahan GME antara lain adanya stigma, kesulitan dalam mengidentifikasi gejala masalah gangguan mental dan kecenderungan pada diri sendiri saat menghadapi masalah. Upaya penanggulangan masalah GME kepada mahasiswa perlu dilakukan. Penggunaan SRQ-20 dapat menjadi alat skrining awal pada GME. Deteksi dini gangguan mental emosional di FMIPA Universitas X menggunakan instrument SRQ-20. Kuesioner dibagikan secara online. Terdapat 329 responden yang terdiri dari mahasiswa semua Angkatan yang bersedia mengisi kuesioner. Terdapat 71,7% responden dalah Perempuan. Gejala mudah Lelah merupakan gejala yang paling banyak dialami mahasiswa semester 2 (64,4%) dan mahasiswa semester 6 (70,4%) adalah mudah lelah (64,4%). Gejala merasa cemas, tegang atau khawatir menjadi gejala yang paling banyak dialami oleh mahasiswa semester 4 (74,6%) dan semester 8 keatas (79,5%). Terdapat 63,6% dari responden laki-laki, 74,2% dari responden perempuan, dan 70,5% dari seluruh responden terdeteksi mengalami GME. Terdapat 13 responden (4%) yang mengalami tujuh gejala depresi, 116 responden (35,5%) mengalami tiga gejala cemas, 56 responden (17,0%) mengalami empat gejala somatik, 87 responden (26,4%) mengalami tiga gejala kognitif dan 45 responden (13,7%) yang mengalami enam gejala penurunan energi.

Comparative Analysis of SDLC and R&D Methods in System Development: A Case Study of Integrity Zone Management System Perdana, Adidtya; Dewi, Sri; Farhana, Nurul Ain; Febrian, Didi
Sinkron : jurnal dan penelitian teknik informatika Vol. 9 No. 4 (2025): Articles Research October 2025
Publisher : Politeknik Ganesha Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33395/sinkron.v9i4.15337

This paper presents a comprehensive comparative analysis of Software Development Life Cycle (SDLC) and Research and Development (R&D) methodologies in system development, with a specific focus on their application to the Integrity Zone Management Information System. Through a systematic literature review and an in-depth case study analysis, this research examines the fundamental differences, strengths, and limitations of each methodology. The study identifies key dimensions for comparison including flexibility, risk management, innovation potential, documentation requirements, and stakeholder engagement. Findings reveal that while SDLC methodologies provide structure and predictability for well-defined requirements, R&D approaches offer greater innovation capacity for exploratory projects. The Integrity Zone Management Information System case demonstrates how hybrid approaches can leverage the strengths of both methodologies and improved stakeholder satisfaction by 94%. This research contributes to the theoretical understanding of system development methodologies and provides practical guidance for selecting appropriate approaches based on project context, objectives, and constraints. The paper concludes with recommendations for practitioners and suggestions for future research in methodological integration and adaptation.

The (Strong) Rainbow Connection Number of Join Of Ladder and Trivial Graph Kartika, Dinda; Febrian, Didi; Surbakti, Nurul Maulida
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 7, No 1 (2023): January
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v7i1.11704

Let G = (V,E) be a nontrivial, finite, and connected graph. A function c from E to {1,2,...,k},k ∈ N, can be considered as a rainbow k-coloring if every two vertices x and y in G has an x- y path. Therefore, no two path's edges receive the same color; this condition is called a “rainbow path”. The smallest positive integer k, designated by rc(G), is the G rainbow connection number. Thus, G has a rainbow k-coloring. Meanwhile, the c function is considered as a strong rainbow k-coloring within the condition for every two vertices x and y in G have an x - y rainbow path whose length is the distance between x and y. The smallest positive integer k, such as G, has a strong rainbow k-coloring; such a condition is called a strong rainbow connection number of G, denoted by src(G). In this research, the rainbow connection number and strong rainbow connection number are determined from the graph resulting from the join operation between the ladder graph and the trivial graph, denoted by rc(L_n∨K_1) and src(L_n∨K_1) respectively. So, rc (L_n∨K_1 )= src (L_n∨K_1 )=2,"for" 3≤n≤4 and rc (L_n∨K_1 )=3, while src(L_n∨K_1 )=⌈n/2⌉,"for" n≥5.

Penentuan Faktor Prioritas dalam Pemilihan Moda Transportasi Penumpang Rute Medan-Pematangsiantar dengan Menggunakan Metode Fuzzy-AHP dan Topsis Butar, Pelixman Butar; Febrian, Didi
Jurnal Ilmiah Universitas Batanghari Jambi Vol 24, No 3 (2024): Oktober
Publisher : Universitas Batanghari Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33087/jiubj.v24i3.5151

The aim of this research is to help Unimed students determine priority modes of passenger transportation that suit the needs and capabilities of the community for the Medan-Pematangsiantar route. This research uses the Fuzzy-AHP and Topsis methods. The research results reveal that cost criteria have the greatest influence in choosing a mode of transportation, while safety criteria have the smallest influence. Apart from that, the most popular mode of transportation is buses, while the least popular is travel agents.

Logistic Regression Analysis to Determine Factors Influencing Career Choices of Undergraduate Alumni: Analisis Regresi Logistik untuk Menentukan Faktor-Faktor yang Mempengaruhi Pilihan Karir Lulusan Sarjana Perguruan Tinggi Febrian, Didi; Harliana, Putri; Farhana, Nurul Ain
KUBIK Vol 10 No 2 (2025): IN PRESS
Publisher : Jurusan Matematika, Fakultas Sains dan Teknologi, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/kubik.v10i2.45050

An undergraduate alumni has three career choices, namely work, postgraduate study or entrepreneurship. The success of an alumni's career is not only influenced by academic knowledge, but also by other factors that reflect the individual's personal and professional abilities. These factors are certainly obtained from the experiences that the alumni have gone through while studying for their undergraduate program. The respondents of this study were 100 undergraduate alumni of Universitas Negeri Medan in 2021 and 2022. This study aims to determine the effect of GPA (X1), study period (X2), number of achievements (X3), organizational activity (X4), work intensity during undergraduate (X5), and TOEFL score (X6) on alumni career choices (Y). In logistic regression analysis, the independent variable must have at least two categories so that the alumni's career choices (Y) are working (0) and postgraduate study (1). The results of the study showed that only the work intensity factor during S1 (X5) and TOEFL score (X6) had a significant influence on alumni career choices. The Logistic Regression Model based on the influential variables was . The percentage of model accuracy can predict correctly by 72.0%.

Logistic Regression Analysis to Determine Factors Influencing Career Choices of Undergraduate Alumni: Analisis Regresi Logistik untuk Menentukan Faktor-Faktor yang Mempengaruhi Pilihan Karir Lulusan Sarjana Perguruan Tinggi Febrian, Didi; Harliana, Putri; Farhana, Nurul Ain
KUBIK Vol 10 No 2 (2025): IN PRESS
Publisher : Jurusan Matematika, Fakultas Sains dan Teknologi, UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/kubik.v10i2.45050

An undergraduate alumni has three career choices, namely work, postgraduate study or entrepreneurship. The success of an alumni's career is not only influenced by academic knowledge, but also by other factors that reflect the individual's personal and professional abilities. These factors are certainly obtained from the experiences that the alumni have gone through while studying for their undergraduate program. The respondents of this study were 100 undergraduate alumni of Universitas Negeri Medan in 2021 and 2022. This study aims to determine the effect of GPA (X1), study period (X2), number of achievements (X3), organizational activity (X4), work intensity during undergraduate (X5), and TOEFL score (X6) on alumni career choices (Y). In logistic regression analysis, the independent variable must have at least two categories so that the alumni's career choices (Y) are working (0) and postgraduate study (1). The results of the study showed that only the work intensity factor during S1 (X5) and TOEFL score (X6) had a significant influence on alumni career choices. The Logistic Regression Model based on the influential variables was . The percentage of model accuracy can predict correctly by 72.0%.

Pemberdayaan Pembatik Lokal melalui Pendampingan Desain Batik Digital Menggunakan Aplikasi Ambatig Kartika, Dinda; Niska, Debi Yandra; Misgiya, Misgiya; Nasution, Hamidah; Febrian, Didi; Habibi, Rizki; Saputra S, Kana; Atmojo, Wahyu Tri
Amal Ilmiah: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2026): Edisi Maret 2026
Publisher : FKIP Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36709/amalilmiah.v7i1.602

Program pengabdian ini bertujuan meningkatkan kapasitas perajin batik melalui pendampingan desain batik digital menggunakan aplikasi Ambatig untuk mempercepat perancangan dan menata konsistensi pengulangan motif tanpa menghilangkan identitas Batak–Melayu. Kegiatan dilaksanakan selama empat minggu melalui sosialisasi, pelatihan, penerapan teknologi, dan pendampingan dengan pemanfaatan pengaturan pola frieze (satu arah) dan kristalografi (dua arah). Evaluasi melibatkan 15 peserta menggunakan angket skala Likert pada lima poin serta observasi terhadap durasi pradesain, jumlah varian desain, dan kesalahan sambungan pola. Hasil menunjukkan rerata kepuasan peserta di atas skor 4 dengan sekitar 80% respons positif, terutama pada aspek kesesuaian gaya visual (4,5) dan kemudahan dipelajari (4,3). Secara operasional, waktu pradesain berkurang dari sekitar 90 menit menjadi 40–50 menit per varian, peserta mampu menghasilkan 2–3 varian desain dalam 90 menit, dan kesalahan sambungan pola berkurang. Program ini juga menghasilkan portofolio desain digital berisi parameter siap produksi. Dengan demikian, pemanfaatan Ambatig efektif meningkatkan efisiensi dan kerapian perancangan motif batik serta mendukung pelestarian dan keberlanjutan motif Batak–Melayu melalui dokumentasi digital dan penguatan kapasitas perajin lokal.

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