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All Journal PIONIR: Jurnal Pendidikan EDUTECH: Jurnal Ilmu Pendidikan dan Ilmu Sosial Quantitative Economics Journal Jurnal Masharif al-Syariah: Jurnal Ekonomi dan Perbankan Syariah LIABILITIES (JURNAL PENDIDIKAN AKUNTANSI) Biblio Couns : Jurnal Kajian Konseling dan Pendidikan Hasil Pengabdian Kepada Masyarakat WIDYABHAKTI Jurnal Ilmiah Populer Ihsan: Jurnal Pengabdian Masyarakat Jupeko (Jurnal Pendidikan Ekonomi) Jurnal Penelitian, Pendidikan dan Pengajaran: JPPP Education Journal of Indonesia (EJI) Abdi Cendekia: Jurnal Pengabdian Masyarakat Alinea: Jurnal Bahasa, Sastra, dan Pengajaran Waspada : Jurnal Wawasan Pengembangan Pendidikan EduInovasi: Journal of Basic Educational Studies Hanif Journal of Information Systems
Dian Novianti Sitompul
Universitas Muhammadiyah Sumatera Utara
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Application of Fuzzy C-Means Algorithm for Clustering Customers Oktaviana Nirmala Purba; Dian Novianti Sitompul; Tua Holomoan Harahap; Sri Rahmah Dewi Saragih; Rizka Fahruza Siregar
Hanif Journal of Information Systems Vol. 1 No. 1 (2023): August Edition
Publisher : Ilmu Bersama Center

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56211/hanif.v1i1.8

Abstract

Today's fierce business competition requires companies to focus on the needs desired by consumers.This makes companies have to think about how to manage customer data so that it can be utilized properly for the development of marketing strategies.And Grouping (cluster) customers based on their respective characteristics can be an alternative in solving these problems.In clustering (cluster) customers there are several data mining clustering methods that can be used, one of which is the Fuzzy C-Means (FCM) method. FCM is a clustering algorithm where one object can be a member of several clusters and FCM cluster boundaries are vague. The output of FCM is a row of cluster centers and several degrees of membership for each data point. In this clustering, customers will be divided into 4 customer clusters namely Golden, Silver, Bronze, and Iron with the variables used as a reference are the final purchase date, purchase frequency and total purchase. The data used is customer transaction data for the period September - December 2015. The total data is 709 transactions from 75 customers. After the data is processed with the Fuzzy C-Means method, the final results show that the iteration ends at the 30th iteration with a change in the objective function of 9.8. The resulting customer clusters are Golden: 27, Silver: 15, and Bronze: 33 with a cluster validity of 0.596277.
Analisis Kebudayaan Batak Pakpak di Sumatera Nur Sakinah; Dewi Hanifah; Dian Novianti Sitompul
EduInovasi:  Journal of Basic Educational Studies Vol. 4 No. 3 (2024): EduInovasi:  Journal of Basic Educational Studies
Publisher : Intitut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/edu.v4i3.4398

Abstract

Batak Pakpak regional culture is an integral part of the richness of Indonesian culture spread across the Sumatra region. Geographically, the Pakpak Batak tribe inhabits the high hilly areas around the North Tapanuli area. Their culture encompasses various aspects, including language, customs, traditional arts, music, dance, and unique beliefs and value systems. The customs of the Pakpak Batak tribe are very strong in everyday life, with norms that regulate various aspects of social, economic and religious life. Traditional arts such as carving, weaving and stone carving are deep cultural expressions and have high value for the Pakpak people. Apart from that, traditional Batak Pakpak music and dances, such as gondang sabangunan and tortor, are important media in traditional ceremonies and cultural festivals. They are also known for their beliefs and value systems that value living in harmony with nature and the continuity of generations. This research aims to dig deeper into the cultural diversity of the Batak Pakpak in Sumatra and understand the role and cultural values in strengthening their identity. Through this analysis, it is hoped that it can provide a more comprehensive picture of this cultural richness and its implications in the context of Indonesia's cultural diversity.
Edukasi Ecoprint sebagai Inovasi Pendidikan Ramah Lingkungan di Kelurahan Limau Mungkur Rita Harisma; Dian Novianti Sitompul; Melyani Sari Sitepu; Halimah Tussa’Diah; Nurman Ginting
Abdi Cendekia : Jurnal Pengabdian Masyarakat Vol 5 No 2 (2026): Juni
Publisher : Yayasan Zia Salsabila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61253/abdicendekia.v5i2.880

Abstract

Edukasi ecoprint dilaksanakan dilatarbelakangi oleh rendahnya kesadaran masyrakat terhadap pentingnya menjaga lingkungan serta kurangnya kreativitas dalam menfaatkan potensi alam sekitar. Edukasi ecoprintmenjadi solusi inovatif yang menggabungkan unsur seni, keterampilan, dan nilai ramah lingkungan melalui pemanfaatan bahan alami seperti daun dan bunga sebagai pewarna kain. Metode pelaksanaan kegiatan meliputi pelatihan dasar, pendamping proses pembuatan, serta refleksi dan evaluasi. Pelatihan diawali dengan penyampaian materi menggunakan media powerpoint, dilanjutkan dengan demonstrasi dan peraktik langsung. Melalui pelatihan ini, peserta diajarkan teknik dasar ecoprint, mulai dari pengenalan bahan, proses pembuatan motif, hingga tahap pewarnaan dan fiksasi hasil cetakan. Kegiatan pelatihan ini tidak hanya berfokus pada aspek keterampilan teknis, tetapi juga memiliki nilai edukatif dan lingkungan yang tinggi. Melalui pelatihan ini, peserta memperoleh pengetahuan dan keterampilan dalam memanfaatkan bahan alam seperti daun dan bunga untuk menghasilkan karya tekstil ramah lingkungan. Kegatan ini tidak hanya meningkatkan kreativitas dan kepedulian terhadap lingkungan, tetapi juga membuka peluang ekonomi baru bagi warga. Dengan adanya pendampingan dan antusiasme peserta, diharapkan program edukasi ecoprint dapat terus berlanjut dan menjadi salah satu upaya memperdayaan masyarakat yang berkelanjutan di Kelurahan Limau Mungkur. Hasil kegiatan menunjukkan peningkatan pengetahuan dan keterampilan peserta dalam teknik ecoprint, serta tumbuhnya kesadaran terhadap pelestarian lingkungan.
A Journalism Teaching Model Focused on Interpersonal Intelligence in News Writing for Students at the University of Muhammadiyah North Sumatra Halimah Tussa’diah; Dewi Juni Artha; Dian Novianti Sitompul; Melyani Sari Sitepu
Alinea: Jurnal Bahasa, Sastra dan Pengajaran Vol. 6 No. 1 (2026): Alinea: Jurnal Bahasa, Sastra, dan Pengajaran
Publisher : Bale Literasi: Lembaga Riset, Pelatihan & Edukasi, Sosial, Publikasi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58218/alinea.v6i1.2666

Abstract

This study was prompted by the fact that students’ news writing skills are not yet up to standard, as evidenced by their difficulties in identifying ideas, structuring news articles and using journalistic language, as well as a lack of interaction during lessons. In fact, writing news articles requires not only a grasp of the 5W+1H elements, but also the ability to communicate, collaborate and provide feedback. This study aims to develop a journalism learning model focused on interpersonal intelligence to enhance the news writing skills of students at the University of Muhammadiyah North Sumatra. The study employed a research and development approach with a sample of 25 students. Data were collected through interviews, content expert validation, instructional expert validation, pre-tests and post-tests, and a student feedback questionnaire. Data analysis was conducted using both quantitative and qualitative descriptive methods. The research findings indicate that the model developed is highly valid, with a validation rate of 90% among subject matter experts and 90% among learning experts. The model was also effective in improving news writing skills, as demonstrated by the increase in the average pre-test score from 64.5 to 83.8 in the post-test. Furthermore, student feedback on the model was overwhelmingly positive, with 91.65% of respondents expressing approval. The novelty of this research lies in the integration of journalism training with interpersonal skills through discussion, collaboration, presentations and feedback within a systematic, collaborative and contextual model of news writing.
The Effect of Product Quality on Consumer Satisfaction of Shopee Among Students of the Faculty of Teacher Training and Education Universitas Muhammadiyah Sumatera Utara Dian Novianti Sitompul; Anisa
EDUCATION JOURNAL OF INDONESIA Vol. 6 No. 2 (2025)
Publisher : EDUCATION JOURNAL OF INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/eji.v6i2.4868

Abstract

The rapid growth of e-commerce has transformed consumption habits, particularly among university students. Shopee, as a leading e-commerce platform, offers products with varying quality levels which significantly affect consumer satisfaction. This study aims to analyse the influence of product quality on consumer satisfaction of shopee user among studens of the Faculty of Teacher Training and Education at Universitas Muhammadiyah Sumatera Utara (UMSU) class of 2021. This quantitative research involved a sample of 80 respondents, with data collected trought questionnaires and analysed using simple linear regression with the aid of SPSS 25. The results demonstrate a positive and significant effect of product quality on consumer satisfaction. The findings suggrst that improving product quality is essential for enhancing consumer satisfaction and loyalty on e-commerce platforms.
Hubungan Self Efficacy Terhadap Minat Mengajar : Studi Pada Mahasiswa Pendidikan Akuntansi Ully Atika; Dian Novianti Sitompul
WASPADA (Jurnal Wawasan Pengembangan Pendidikan) Vol 14, No 1 (2026): WASPADA
Publisher : Faculty of Teacher Training and Education of Undaris

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61689/waspada.v14i1.997

Abstract

This study aims to reveal the relationship between self-efficacy and teaching interest in AccountingEducation students at the University of Muhammadiyah North Sumatra (UMSU). Self-efficacy is anindividual's belief in their ability to complete tasks or face certain situations, which is believed to have aninfluence on students' readiness and interest in pursuing a profession as an educator. The researcher used aquantitative approach with a survey design. The population in this study were all 98 accounting educationstudents at UMSU and the sample was the entire population. The sampling technique used was totalsampling. The research instrument used a questionnaire. The data analysis technique used simple linearregression analysis with the help of SPSS 23 software. The results of the statistical analysis showed a positiveand significant relationship between self-efficacy and teaching interest of 39.5%. This means that the higherthe level of student self-efficacy, the greater their interest in becoming a teacher.Keywords: Self-efficacy, Teaching Interest
Co-Authors Anisa Ayrin Rissky Amalia Citra Aulia Rahmadani Dewi Hanifah Dewi Juni Artha Faisal Rahman Dongoran Halimah Tussa Diah Indah Wikiya Sari Isra Hayati Melyani Sari Sitepu Mutia Febriyana Mutia Ferbriyana Nur Sakinah Nur Sakinah Nurman Ginting Oktaviana Nirmala Purba Pipit Putri Hariani MD Putri Rahayu Ramayani Ramayani Rita Harisma Rizka Fahruza Siregar Rosdiana Saragih Sri Rahma Dewi Saragih Tua Holomoan Harahap Ully Atika