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All Journal JURNAL PIJAR Journal of the Indonesian Mathematical Society Science and Technology Indonesia Beta: Jurnal Tadris Matematika Jurnal Pengabdian Magister Pendidikan IPA EIGEN MATHEMATICS JOURNAL Jurnal Matematika UNAND Jurnal Teknodik Jurnal Abdi Insani Square : Journal of Mathematics and Mathematics Education JPIn : Jurnal Pendidik Indonesia SPEKTA (Jurnal Pengabdian Kepada Masyarakat : Teknologi dan Aplikasi) Jurnal Ilmiah Abdi Mas TPB Unram Prosiding Konferensi Nasional PKM-CSR Jurnal Pijar MIPA Jurnal Pariwisata Nusantara Jurnal Pendidikan dan Pengabdian Masyarakat Jurnal Pengabdian Inovasi Masyarakat Indonesia Sinergi dan Harmoni Masyarakat MIPA
Mamika Ujianita Romdhini
Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Mataram
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Nursing Physics Public Health Social Sciences Other

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Edukasi Masyarakat Pesisir untuk Mengatasi Pencemaran Lingkungan Berbasis Nanoteknologi Ramah Lingkungan Saprini Hamdiani; Mamika Ujianita Romdhini; Siti Raudhatul Kamali; Nurul Ismillayli; Dhony Hermanto; Ulul Khairi Zuryati; Ruru Honiar; Lely Kurniawati
Jurnal Pengabdian Inovasi Masyarakat Indonesia Vol. 2 No. 2 (2023): Edisi Agustus
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpimi.v2i2.3239

Abstract

Pengabdian ini bertujuan untuk meningkatkan pemahaman masyarakat pesisir Pulau Lombok terhadap cara mengatasi pencemaran lingkungan berbasis konsep nanoteknologi yang ramah lingkungan. Edukasi yang dilakukan melalui sesi ceramah dan tanya jawab dengan metode Focus Group Discussion (FGD). Lokasi pengabdian yang dipilih adalah di Pantai Gading, Kota Mataram, Provinsi Nusa Tenggara Barat. Pantai ini merupakan salah satu titik wisata favorit masyarakat Lombok, terutama untuk menikmati keindahan sunset dan hidangan lautnya yang lezat. Aktivitas pariwisata yang bergeliat menyebabkan pencemaran lingkungan akibat sampah yang dihasilkan. Keadaan ini harus segera ditanggulangi karena akan berdampak terhadap kunjungan wisatawan ke Pantai Gading. Salah satu tahap awal yang dapat dilakukan untuk mengurangi pencemaran, adalah mengedukasi warga masyarakat lokal tentang pentingnya penerapan nanoteknologi dalam kehidupan sehari-hari. Proses edukasi dilakukan melalui program pengabdian masyarakat dengan turun langsung ke lapangan memberikan pemahaman kepada masyarakat. Kegiatan ini diikuti oleh sekitar 25 orang peserta, dan berhasil meningkatkan pemahaman masyarakat tentang konsep pengelolaan limbah berbasis nanoteknologi, rata-rata sebanyak 81.25%.
Application of Dijkstra Algorithm in Determining Transportation Costs for Tourist Attractions in Lombok Island Based on the Shortest Path M. Afdhaluzzikri; Lalu Djatmika Santriawan; Ermawati Sapni; M. Setyo Nugroho; Mamika Ujianita Romdhini
Jurnal Pariwisata Nusantara (JUWITA) Vol. 3 No. 2 (2024): Jurnal Pariwisata Nusantara (JUWITA)
Publisher : PROGRAM STUDI PARIWISATA SYARAH, FAKULTAS EKONOMI DAN BISNIS ISLAM, UNIVERSITAS ISLAM NEGERI MATARAM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20414/juwita.v3i2.11017

Abstract

Purpose: Lombok Island is known as an attractive tourist destination with natural beauty and unique culture. The growth of the tourism sector is very important for regional economic development. Lombok Island often faces challenges in its transportation system, including complex routes, varying road conditions, and traffic problems. Method: In this research, the data used were 30 tourist attractions on the island of Lombok sourced from the Tourism Office. Tourist attractions in Lombok are represented by vertices in the graph. Then the edges represent roads connecting tourist attractions and the weights represent the cost of getting to each tourist attraction from a starting vertex. Then, to determine the minimum transportation cost for each tourist attraction based on this graph, we use Dijkstra algorithm based on the shortest path for each tourist attraction. Result: The minimum transportation costs for each tourist attraction are obtained based on the shortest route for each tourist attraction on Lombok Island. Contribution: The application of Dijkstra algorithm can be a solution to overcome some of these challenges by determining the shortest path and optimizing transportation costs.
Indeks Topologi Padmakar Ivan dan Szeged pada Graf Koprima Prima dari Grup Bilangan Bulat Modulo Abdurahim, Abdurahim; Pratiwi, Lia Fitta; Karang, Gusti Yogananda; Wardhana, I Gede Adhiya Wisnu; Irwansyah, Irwansyah; Awanis, Zatta Yumni; Romdhini, Mamika Ujianita
Square : Journal of Mathematics and Mathematics Education Vol. 6 No. 2 (2024)
Publisher : UIN Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/square.2024.6.2.22836

Abstract

The Prime Coprime Graph is defined as a graph in which two distinct vertices are adjacent if and only if the greatest common divisor of their orders is 1, indicating that they are coprime. This research focuses on deriving general formulas for the Padmakar-Ivan index and the Szeged index for the coprime prime graph of the modulo integer group with n=p^k, where p is a prime number and k is not less than 2. As a result of this study, explicit formulas for the Padmakar-Ivan and Szeged indices were obtained, along with an analysis of the relationship between these two indices.Keywords: prime coprime graph, Padmakar-Ivan index, Szeged index.
EDUKASI KIMIA DAN MATEMATIKA UNTUK MASYARAKAT PESISIR SEBAGAI LANGKAH AWAL DALAM MENGATASI PENCEMARAN LINGKUNGAN Kamali, Siti Raudhatul; Hermanto, Dhony; Romdhini, Mamika Ujianita; Hamdiani, Saprini; Ismillayli, Nurul; Kurniawati, Lely; Wirahadi, Ahmad; Mariana, Baiq
Jurnal Pendidikan dan Pengabdian Masyarakat Vol. 6 No. 4 (2023): November
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppm.v6i4.5992

Abstract

Pencemaran limbah di kawasan pesisir adalah tantangan serius yang memerlukan pemahaman mendalam tentang sumber pencemaran, dampaknya, dan solusi yang berkelanjutan. Kegiatan pengabdian ini bertujuan untuk mengatasi masalah ini melalui penerapan pendekatan berbasis kimia dan matematika sebagai media edukasi yang lebih efektif kepada masyarakat pesisir, khususnya masyarakat Pantai Gading yang menjadi mitra kegiatan pengabdian. Pada tahap persiapan, survey lingkungan dilakukan untuk mengidentifikasi sumber-sumber utama pencemaran limbah di wilayah tersebut dan mengetahui pemahaman awal masyarakat tentang pencemaran limbah. Hasil survey ini menjadi dasar untuk merancang program edukasi yang sesuai. Selanjutnya, program edukasi kimia dan matematika dikembangkan dan disampaikan kepada masyarakat pesisir menggunakan metode Focus Group Discussion (FGD) yang melibatkan 18 orang peserta. Hasil dari kegiatan menunjukkan perubahan signifikan dalam pemahaman masyarakat tentang penerapan edukasi kimia dan matematika dalam mengatasi pencemaran limbah serta peningkatan kesadaran mereka dalam mengambil tindakan yang konkret.
Relation Between the First Zagreb and Greatest Common Divisor Degree Energies of Commuting Graph for Dihedral Groups Romdhini, Mamika Ujianita; Nawawi, Athirah
Science and Technology Indonesia Vol. 10 No. 1 (2025): January
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.1.1-8

Abstract

The commuting graph for a finite group G, ΓG, has a set of vertices G \ Z(G), where Z(G) is the center of G, and vp,vq ∈ G \ Z(G) in which vp ≠ vq , are adjacent whenever vpvq = vqvp. The entries of the first Zagreb matrix (Z1) of ΓG are either the summation of the degrees of two adjacent vertices, or zero for non-adjacent vertices and also for the diagonal entries. Meanwhile, the entries of the greatest common divisor degree matrix (GCDD) of ΓG are the greatest common divisor of the degrees of two adjacent vertices and zero otherwise. The Z1-energy is determined by the sum of absolute eigenvalues of the corresponding Z1-matrix, whereas GCDD-energy is the sum of absolute eigenvalues of the GCDD-matrix. In this study, we find the spectral radius and the energies of ΓG for dihedral groups of order 2n, D2n, associated with Z1- and GCDD-matrices. It is found that Z1-energy is equal to twice GCDD-energy, whereas GCDD-energy is similar to maximum and minimum degree energies that were reported earlier in previous literature.
On Energy of Prime Ideal Graph of A Commutative Ring Associated with Seidel-Based Matrices Romdhini, Mamika Ujianita
Journal of the Indonesian Mathematical Society Vol. 31 No. 1 (2025): MARCH
Publisher : IndoMS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22342/jims.v31i1.1713

Abstract

Some energies of the prime ideal graph are found for a commutative ring associated with Seidel-based matrices including Seidel, Seidel Laplacian, and Seidel signless Laplacian matrices.
Pemanfaatan Limbah Bulu Ayam Dalam Mewujudkan Wirausaha Mandiri Di Desa Nyiur Tebel Lombok Timur Rahman, Muhammad Rizki; Ghina Briliana Fatin Octariana; Davina Puspa Ningrum; Dira Agnita Putri Widodo; Dwi Yan Resilia; Lena Yuliastini; Nurkurnia Sari; Rizki Faturrahman; Raden Mohammad Akbar Rafi; Rossy Jamalul Hoir; Romdhini, Mamika Ujianita
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 1 (2025): Januari-Maret 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i1.10523

Abstract

The purpose of this community service program is to find a new way to convert chicken feather waste into environmentally friendly and valuable animal feed. As an alternative to animal feed, chicken feather waste contains high protein. In this activity, the community is educated on how to process chicken feathers to support the sustainability of livestock farming and reduce environmental pollution. This program involves local farmers, small business groups, and academics. The results of the community service show that animal feed products made from chicken feather waste can increase feed efficiency, reduce production costs, and provide the community with new business opportunities. As a result, this project is expected to help improve community welfare in a sustainable manner and become a model for the application of appropriate technology in managing chicken feather waste.
Implementasi Modul Olimpiade SMP Di SMPN 2 Kuripan Lombok Barat Lalu Riski Wirendra Putra; Rendi Bahtiar Pratama; Gusti Yogananda Karang; Irwansyah Irwansyah; I Gede Adhitya Wisnu Wardhana; Mamika Ujianita Romdhini; Abdurahim Abdurahim; Fariz Maulana; Rio Satriyantara; Zata Yumni Awanis; Syaftirridho Putri; Syifa Salsabila Satya Graha; Fathul Maulina Wahidah; Lia Fitta Pratiwi; Satriawan Pradana; Ayes Malona Siboro; Farwan Farwan
Sinergi dan Harmoni Masyarakat MIPA Vol. 1 No. 1 (2024): Oktober
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/sinonim.v1i1.12-16

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk mengimpelementasikan modul pembelajaran olimpiade matematika bagi siswa SMPN 2 Kuripan. Kebutuhan akan modul ini didasarkan pada rendahnya akses siswa terhadap materi-materi persiapan olimpiade yang terstruktur dan sesuai dengan kemampuan serta kebutuhan mereka. Metode yang digunakan dalam pengembangan modul ini meliputi analisis kebutuhan, desain dan pengembangan modul, serta uji coba. Modul ini dirancang untuk mencakup berbagai topik matematika yang sering muncul dalam olimpiade, disertai dengan contoh soal dan pembahasan yang mendalam. Hasil dari kegiatan ini menunjukkan bahwa penggunaan modul olimpiade matematika ini dapat meningkatkan pemahaman siswa terhadap materi olimpiade, serta memotivasi mereka untuk lebih aktif dalam mengikuti kompetisi. Evaluasi melalui uji coba menunjukkan respon positif dari siswa, dengan peningkatan signifikan pada hasil latihan soal.
Membangun Antusiasme Belajar Matematika dan Sains Siswa SDN 1 Senaru Melalui Program Pendampingan Edukatif Romdhini, Mamika Ujianita; Saprini Hamdiani; Siti Raudhatul Kamali; Dhony Hermanto; Nurul Ismillayli; Marliadi Susanto
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 2 (2025): April-Juni 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i2.11287

Abstract

Kegiatan pendampingan belajar ini dilaksanakan di SDN 1 Senaru sebagai bentuk kontribusi nyata dalam meningkatkan minat dan motivasi siswa terhadap mata pelajaran Matematika dan Sains. Berdasarkan observasi awal, sebagian besar siswa mengalami kesulitan dalam memahami konsep dasar kedua topik tersebut serta menunjukkan minat belajar yang rendah. Oleh karena itu, kegiatan ini bertujuan untuk memberikan pengalaman belajar yang menyenangkan, interaktif, dan aplikatif melalui metode eksperimen yang sederhana, permainan edukatif, serta pendekatan kontekstual yang sesuai dengan tingkat perkembangan siswa sekolah dasar. Hasil kegiatan menunjukkan adanya peningkatan antusiasme dan partisipasi aktif siswa selama proses pendampingan berlangsung. Evaluasi dilakukan melalui observasi, kuisioner sederhana, dan refleksi kegiatan. Program ini diharapkan dapat menjadi model pembelajaran alternatif yang mampu menumbuhkan semangat belajar Matematika dan Sains sejak dini.
Transmission-Based Energies of Prime Coprime Graph for Integers Modulo Group Romdhini, Mamika Ujianita; Abdurahim; Maharani, Andika Ellena Saufika Hakim; Kamali, Siti Raudhatul
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.759-765

Abstract

Graphs are an excellent instrument that provides an algebraic structure for visualizing and interpreting molecule structures and characteristics. As a result, the problem statement arises regarding how we can interpret graphs with eigenvalues concerning their corresponding matrices. Such questions can be answered by studying spectral graph theory. This research focuses on graphs whose vertex sets are group elements in which the structure of ℤn groups and the definition of a prime coprime graph serve as the foundation for the graph building used in this study. The matrix construction of the graph is based on transmission-based matrices including Weiner-Hosoya and distance signless Laplacian matrices. Research methods include investigating the transmission properties and formulation of the characteristic equation using block matrices. The results obtained are a comprehensive analysis of eigenvalues, spectrum, and spectral radius leading to the prime coprime graph energy for ℤn groups corresponding to both matrices.
Co-Authors Abdul Azis Lalu Mursy Abdurahim Abdurahim, Abdurahim Ahmad Tedi Ruslan Al-Quran, Ashraf Al-Sharqi, Faisal Awanis, Zatta Yumni Ayes Malona Siboro Baldovini, Nicolas Borisman Bertinegara Davina Puspa Ningrum Devi Lastri Dhony Hermanto Diah Ayu Saptyaningtyas Dira Agnita Putri Widodo Dwi Yan Resilia Dzakiyatul Mardliyah Ermawati Sapni ERNIN HIDAYATI Fahmi Handika Fariz Maulana Farwan Farwan Farwan, Farwan Fathul Maulina Wahidah Ghina Briliana Fatin Octariana Graha, Syifa Salsabila Satya Gusti Yoga Nanda Karang Gusti Yogananda Karang Gusti Yogananda Karang Halilintar Nur Hidayatullah Hermanto, Koko Hibban Kholiq Hibban Kholiq Husni Fitroti I Gede Adhitya Wisnu W. I Gede Adhitya Wisnu Wardhana I Gede Adhitya Wisnu Wardhana I Gede Adhitya Wisnu Whardana Irwansyah - Irwansyah Irwansyah Irwansyah Irwansyah Irwansyah Irwansyah Irwansyah Irwansyah Ito, Michiho Jihadil Qudsi Julisaniah, Nur Indah Karang, Gusti Yogananda Krissinta Bulan Wardhani Kurniasih Sukenti Kurniawan Sugiarto Laila Hayati Laila Hayati, Laila Lailia Awalushaumi Lalu Djatmika Santriawan Lalu Riski Wirendra Putra Lely Kurniawati Lely kurniawati Lena Yuliastini Lia Fitta Pratiwi Lia Fitta Pratiwi M. Afdhaluzzikri M. Setyo Nugroho Maharani, Andika Ellena Saufika Hakim Mariana, Baiq Marliadi Susanto Marliadi Susanto Marwan Marwan Maulana, Fariz Mira Sulisdiana Muhammad Imam Al Paqih Muhammad Khairurradziqin Muhammad Taufan Muktasam Mustika Hadijati Nadia W Nadia, Ahsanu Nafika Fatanaya Nawawi, Athirah Ni Wayan Switrayni Nora Idiawati Nurkurnia Sari Nurul Ismillayli Parizal Hidayatullah Pradana, Satriawan Pratama, Rendi Bahtiar Pratiwi, Lia Fitta Puguh Riawang Puspita Dewi, Chandra Putra, Lalu Riski Wirendra Putri, Syaftirridho Qomaria Sinta Sari Qudsi, Jihadil Rabbelia Tri Qudrani Raden Mohammad Akbar Rafi Raehanatul Mardiyah Rahman, Muhammad Rizki Rendi Bahtiar Pratama Rida Akausar Hardi Rina Juliana Rio Satriyantara Ririn Maulidia Rizki Faturrahman Rodzi, Zahari Md. Rossy Jamalul Hoir Ruru Honiar Saprini Hamdiani Sarwa Hita Satriawan Pradana Septi Fajria Siboro, Ayes Malona Siti Rahmatullah Siti Raudhatul Kamali Siti Raudhatul Kamali Sunarwidhi , Anggit Listyacahyani Surya Hadi Surya Hadi Syaftirridho Putri Syifa Salsabila Satya Graha Takamatsu, Sakura Teguh Ardianto, Teguh Tri Mulyaningsih Ulul Khairi Zuryati Wahidah, Fathul Maulina Wahyu Ulfayandhie Misuki Wardhana, I Gede Adhiya Wisnu Wirahadi, Ahmad Yanagisawa, Masayuki Yumi, Fujiwara Zata Yumni Awanis Zata Yumni Awanis