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All Journal EIGEN MATHEMATICS JOURNAL Jurnal Pustaka Mitra : Pusat Akses Kajian Mengabdi Terhadap Masyarakat Abdi Akommedia : Jurnal Pengabdian Masyarakat Jurnal Bisantara Informatika Jurnal Pendidikan Matematika Universitas Lampung Integra: Journal of Integrated Mathematics and Computer Science
Sawitri, Riza
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Computer Science & IT Education Languange, Linguistic, Communication & Media Library & Information Science Mathematics Physics Public Health Social Sciences Other

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Pelatihan Penggunaan LaTeX Untuk Penulisan Skripsi Bagi Mahasiswa Program Studi Sarjana Matematika FMIPA Universitas Lampung Mega Sapitri, Nonik; Sawitri, Riza; Wamiliana; Abdurrahman, Ahmad Faruq
ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT Vol. 2 No. 4 (2024)
Publisher : ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT

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Abstract

The purpose of this community service activity is to improve the ability of students of the Bachelor of Mathematics Study Program FMIPA University of Lampung to use LaTeX for thesis writing. LaTeX was chosen because it is able to produce documents with a professional format, especially in managing mathematical equations and document layout. The training was held on October 24, 2024 at the Computer Laboratory ofthe Mathematics Department with 19 fifth semester students participating. The methods used include providing training modules, using LaTeX-based thesis templates, and hands-on practice using the Overleaf platform. The training results showed that 95% of participants recognized theimportance of using LaTeX, with 93% feeling satisfied with the training implementation. However, time efficiency was evaluated with a score of 80%, indicating the need for further training. Participants showed high enthusiasm and were able to practice LaTeX features, including table creation and writing mathematical equations. Through this training, students are equipped with technical skills to produce a thesis that is not only content-quality but also meets academic standards. Thus, this activity supports the strengthening of student competencies while supporting the University of Lampung as a higher education institution that excels in academics and research.
Teknologi dan Kreativitas dalam Wirausaha Bagi Siswa Madrasah Aliyah (MA) Ma’arif Kotagajah Lampung Tengah Widiyanti, Ade; Russel, Edwin; Sawitri, Riza; Mega Sapitri, Nonik; Andrade Paskalia M, Felicia
ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT Vol. 2 No. 4 (2024)
Publisher : ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT

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The rapid development of information technology has brought significant changes in various fields, including the business world. This provides students with the opportunity to engage in the digital-based business world. Many students of Madrasah Aliyah (MA) Ma'arif Kotagajah, Lampung Tengah are interested in entrepreneurship. However, it is still hindered by limitations in utilizing technology and creativity to develop businesses and ventures. Therefore, this community service activity is conducted in the form of training aimed at improving students' understanding and skills. This entrepreneurship training emphasizes the use of digital technology and student creativity in entrepreneurship. The methods used include lectures, discussions, and hands-on practice related to digital marketing, digital financial management, and the development of innovative business ideas. This training is expected to equip students with practical and adaptive skills, and be prepared to compete in the modern business world.
Pelatihan Foto dan Video Editing dengan Smartphone untuk Ketrampilan Personal bagi Siswa Panti Asuhan Darul Ma'aruf Amelia, Dhella; Muharmi, Yulya; Citra, Erin Eka; Ruswita, Istiana; Sawitri, Riza
Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat) Vol 4 No 6 (2024): Jurnal Pustaka Mitra (Pusat Akses Kajian Mengabdi Terhadap Masyarakat)
Publisher : Pustaka Galeri Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55382/jurnalpustakamitra.v4i6.816

Abstract

Kegiatan pengabdian masyarakat ini berfokus pada pelatihan keterampilan foto dan video editing menggunakan smartphone untuk siswa di Panti Asuhan Darul Ma'aruf. Program ini dilatarbelakangi oleh kebutuhan akan keterampilan digital yang semakin relevan dalam kehidupan sehari-hari maupun di dunia kerja. Tujuan dari pelatihan ini adalah untuk meningkatkan keterampilan personal siswa dalam mengedit foto dan video sebagai bekal kemandirian di era digital. Metode yang digunakan dalam pelatihan ini meliputi pemaparan materi dasar fotografi dan editing, demonstrasi penggunaan aplikasi editing yang tersedia di smartphone, serta praktik langsung dengan bimbingan. Data dikumpulkan melalui observasi selama pelatihan dan evaluasi keterampilan awal serta akhir dari para peserta. Hasil dari pelatihan menunjukkan peningkatan signifikan dalam pemahaman peserta terkait teknik pengambilan gambar dan penguasaan dasar editing foto dan video. Berdasarkan hasil ini, dapat disimpulkan bahwa pelatihan ini efektif dalam memberikan keterampilan dasar yang bermanfaat bagi siswa panti asuhan. Diharapkan keterampilan ini dapat membuka peluang baru bagi mereka, baik untuk dokumentasi personal maupun sebagai bekal keahlian untuk masa depan.
Implementasi Deep Learning Pemodelan Pergerakan Harga Saham dalam Time Series Mega Sapitri, Nonik; Sawitri, Riza; Russel, Edwin
Jurnal Bisantara Informatika Vol. 8 No. 2 (2024): Jurnal Bisantara Informatika (JBI) Vol. 8 No. 2 Tahun 2024
Publisher : Akademi Manajemen Informatika dan Komputer PARBINA NUSANTARA Pematangsiantar

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Abstract

Pergerakan harga saham sulit untuk ditebak akan arah kelajuannya. Oleh karena itu, diperlukan metode yang dapat memodelkan pergerakan harga saham tersebut supaya mempermudah investor untuk pengambilan keputusan dalam berinvestasi. Salah satu metode yang dapat digunakan adalah pemodelan time series pergerakan harga saham dengan Deep Learning. Terlebih dahulu akan dilihat Autocorrelation Function (ACF) untuk menentukan data saham berupa stasioner atau nonstasioner. Selanjutnya, akan ditentukan beberapa parameter yang dapat mempengaruhi akurasi prediksi pergerakan harga saham. Hasil prediksi pergerakan harga saham yang baik adalah tidak terjadinya overfitting pada model dan juga memberikan hasil data prediksi yang mendekati data aktual. Hal ini dapat dilihat berdasarkan selisih yang kecil antara MSE training dan MSE testing.
Locating Chromatic Number for Rose Graphs and Barbell Operation Sawitri, Riza; Amelia, Lidwina; Asmiati, Asmiati; Nurvazly, Dina Eka
Eigen Mathematics Journal Vol 8 No 2 (2025): December
Publisher : University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/emj.v8i2.315

Abstract

The locating chromatic number of a graph is the minimum color required for a locating coloring. This concept is a combination of partition dimension and vertex coloring of a graph. The purpose of this paper is to determine the locating chromatic number of the Rose graph and the barbell Rose graphs. The method used to obtain the locating chromatic number of a graph is by determining its upper and lower bounds. In this paper, the locating chromatic number of the Rose graphs and its barbell operation were obtained. The locating chromatic number of Rose graph ? (??) is 4 for ? ∈ {3, 4} and 5 for ? ≥ 5. Furthermore, for barbell Rose graphs, 4 for ? = 3 and 5 for ? ≥ 4
Workshop Pelatihan Pemahaman Konsep Aritmatika Sosial untuk Siswa SMKS Nurul Huda Pringsewu Kurniasari, Dian; Asmiati; Widiarti; Sawitri, Riza
ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT Vol. 3 No. 3 (2025)
Publisher : ABDI AKOMMEDIA : JURNAL PENGABDIAN MASYARAKAT

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Abstract

Aritmatika sosial salah satu aspek penting dalam numerasi dasar dan memiliki manfaat praktis yang relevan dengan dunia kerja dan kehidupan sehari-hari. Rendahnya pemahaman siswa SMKS Nurul Huda terhadap konsep matematika yang kontekstual, khususnya pada materi aritmatika sosial, sehingga diperlukan pelatihan pemahaman konsep aritmatika sosial. Kegiatan ini bertujuan untuk memberikan pemahaman konsep aritmatika sosial secara aplikatif serta memotivasi siswa untuk belajar secara mandiri dan berkelanjutan. Workshop ini dilakukan dalam bentuk ceramah interaktif, diskusi, dan simulasi perhitungan kontekstual agar siswa lebih mudah memahami konsep matematika yang diajarkan. Keberhasilan kegiatan workshop dievaluasi melalui pre-test dan post-test. Berdasarkan nilai pre-test dan post-test, diperoleh rata-rata selisih perbedaan nilai post-test dan pre-test sebesar 33,08. Pengujian selisih beda dua rata-rata dengan menggunakan uji t memberikan hasil bahwa secara statistik nilai post-test lebih besar dibandingkan dengan nilai pre-test. Hasil ini menunjukkan bahwa para peserta memahami apa yang disampaikan oleh narasumber dan membuka wawasan mereka tentang artimatika sosial dalam kehidupan sehari-hari.
Implementation of Christofides Algorithm to Determine the Shortest Tour of Some Hospitals in Palembang City Putri, Dwi Rizka Amelia; Oktavia, Niken Sabella; Chasanah, Siti Laelatul; Sawitri, Riza; Paskalia, Felicia Andrade
Integra: Journal of Integrated Mathematics and Computer Science Vol. 2 No. 1 (2025): March
Publisher : Magister Program of Mathematics, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/integrajimcs.20252113

Abstract

Determining the shortest route to connect hospitals is a very important aspect of improving the efficiency of medical service distribution in a big city like Palembang. The shortest tour will result in a shorter time required. This study aims to minimize the time needed for a team of technicians who want to distribute medical equipment and provide simple usage examples to some hospitals in Palembang city. There are 20 hospitals under consideration, and the data on time needed from one hospital to another were obtained from Google Maps. The distance between locations was calculated based on travel time using a four-wheeled vehicle. The Christofides Algorithm will be used in this  problem to determine the shortest tour. The results show that the travel time needed is 171 minutes (only for traveling from one hospital to another and back to the origin, not including the time needed for giving the simple usage of medical equipment). This study provides practical solutions to improve time efficiency, such as delivering medical supplies or emergency response.
Pengembangan Media Komik Menggunakan Aplikasi Android Kodular Pada Materi Sistem Persamaan Linear Tiga Variabel di Kelas X Sawitri, Riza; Rusmining; Aprilia Asidik, Windi
Jurnal Pendidikan Matematika Universitas Lampung Vol. 12 No. 4: Jurnal Pendidikan Matematika Universitas Lampung (Desember 2024-Januari 2025)
Publisher : Faculty of Teacher Training and Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mtk/v12i4.pp279-292

Abstract

This study aims to develop a comic media application of the System of Linear Equations in Three Variables, test the validity and practicality of the System of Linear Equations in Three Variables comic media application for class X students of SMKN 3 Yogyakarta. This research uses the Research and Development (R&D) research method with the ADDIE (Analyze, Design, Development, Implementation and Evaluation) type of development model. Data collection techniques with observation, questionnaires and interviews. Data analysis techniques use analysis of the validity and practicality of comic media. The research involved 5 students for small class trials, and 30 students for large class trials The results of the development in the form of media in the form of System of Linear Equations in Three Variables comic media applications. The results of the study obtained an average score of validity of material experts 59 and media experts 76.5 with “Good” criteria. Practicality test with the results of the average score of practicality of small class trials 68.5 and large class trials 65.72 with “Good” criteria. This shows that the System of Linear Equations in Three Variables comic media application meets the valid and practical criteria so that it is considered as an alternative to be used in learning mathematics.
Co-Authors Abdurrahman, Ahmad Faruq Amelia, Dhella Amelia, Lidwina Andrade Paskalia M, Felicia Aprilia Asidik, Windi Asmiati Asmiati Asmiati Citra, Erin Eka Dian Kurniasari Dina Eka Nurvazly, Dina Eka Istiana Ruswita Mega Sapitri, Nonik Oktavia, Niken Sabella Paskalia, Felicia Andrade Putri, Dwi Rizka Amelia Rusmining Russel, Edwin Siti Laelatul Chasanah, Siti Laelatul Wamiliana Widiarti Widiyanti, Ade Yulya Muharmi