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All Journal JURNAL PENDIDIKAN TAMBUSAI AMALIAH: JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Matematika UNAND Jurnal Ilmiah Matematika dan Pendidikan Matematika (JMP) Square : Journal of Mathematics and Mathematics Education Jurnal Ilmiah Matematika Jurnal Diferensial Jurnal Abdimas Kartika Wijayakusuma Enthusiastic : International Journal of Applied Statistics and Data Science Jurnal Pengabdian kepada Masyarakat Desa (JPMD) Indonesian Journal of Information Technology and Computing (IMAGING) Digital Transformation Technology (Digitech) Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia Dharma Pengabdian Perguruan Tinggi (DEPATI) Basis : Jurnal Ilmiah Matematika Al-Aqlu : Jurnal Matematika, Teknik dan Sains Quadratic: Journal of Innovation and Technology in Mathematics and Mathematics Education Mathematical Journal of Modelling and Forecasting Joong-Ki Journal of Mathematics Theory and Applications
Rahmadi, Deddy
UIN Sunan Kalijaga Yogyakarta
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Library & Information Science Mathematics Nursing Public Health Social Sciences Other

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PENDAMPINGAN PERSIAPAN UJIAN SKD CPNS BERBASIS CAT DI PONDOK PESANTREN MANGKU CANDI ALAS LAMI Rahmadi, Deddy; Ichsan, Alfian Nur Nur; Karunika, Adelia Marsa
Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia. Vol 4, No 2 (2025): Oktober 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat - Universitas Teknologi Digital Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26798/jpm.v4i2.1893

Abstract

Kegiatan pendampingan persiapan ujian Seleksi Kompetensi Dasar (SKD) CPNS berbasis CAT dilaksanakan untuk membantu calon peserta seleksi CPNS dalam memahami sistem ujian berbasis komputer serta meningkatkan kesiapan mereka dalam menghadapi ujian. Metode yang digunakan dalam kegiatan ini adalah pelatihan yang terdiri dari dua sesi, yaitu sharing session dan try out berbasis CAT. Sharing session memberikan kesempatan kepada peserta untuk berdiskusi dengan narasumber yang membagikan pengalaman menghadapi ujian CPNS, sedangkan sesi try out memperkenalkan simulasi ujian berbasis CAT dengan membahas tiga jenis soal utama, yaitu Tes Wawasan Kebangsaan (TWK), Tes Intelegensia Umum (TIU), dan Tes Karakteristik Pribadi (TKP). Kegiatan ini diikuti oleh 15 peserta dengan sistem hybrid yang mencakup peserta luring dan daring. Hasil evaluasi menunjukkan peningkatan pemahaman peserta mengenai format dan strategi ujian SKD CPNS, meskipun terdapat keterbatasan waktu dalam pelaksanaan pelatihan.
DIGITALISASI INFORMASI TANAMAN DENGAN QR-CODE DAN BLOG DI TAMAN WISATA MAKMUR BANJENG Nugroho, Rizki Surya; Rahmadi, Deddy
Jurnal Pengabdian Masyarakat - Teknologi Digital Indonesia. Vol 4, No 2 (2025): Oktober 2025
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat - Universitas Teknologi Digital Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26798/jpm.v4i2.1947

Abstract

Kegiatan pengabdian kepada masyarakat ini bertujuan untuk merancang dan mengimplementasikan sistem digitalisasi informasi tanaman di Taman Wisata Makmur Banjeng menggunakan QR Code dan Blog. Sistem ini memungkinkan pengunjung mengakses informasi tanaman dengan memindai satu QR Code yang mengarahkan mereka ke halaman Linktree, yang berisi daftar tanaman yang ada di taman. Setiap tanaman dalam daftar tersebut memiliki tautan yang mengarah ke blog yang memuat informasi mendalam mengenai tanaman, seperti nama ilmiah, manfaat, habitat, dan karakteristik lainnya. Metode yang digunakan dalam kegiatan pengabdian ini meliputi perancangan sistem digitalisasi, implementasi QR Code, serta uji coba penggunaan sistem oleh pengunjung taman. Hasil dari implementasi sistem ini menunjukkan bahwa pengunjung merasa sistem ini mempermudah akses informasi dan meningkatkan pengalaman edukasi di taman. Meskipun demikian, pengunjung memberikan saran agar QR Code dipasang di lebih banyak titik strategis di taman agar informasi lebih mudah diakses. Kegiatan pengabdian ini memberikan implikasi bahwa teknologi digital berbasis QR Code dan Blog dapat menjadi solusi efektif untuk meningkatkan edukasi lingkungan di taman wisata. Rekomendasi untuk pengembangan lebih lanjut termasuk penambahan titik QR Code dan optimasi tampilan blog agar lebih responsif pada perangkat seluler.
Profit Optimization of Ngawen Orchid MSME Ighfirli Amanda Izzati; Aida Haya Afifah; Neisya Jamilatus Syarifah; Wakhid Fitri Albar; Deddy Rahmadi
Mathematical Journal of Modelling and Forecasting Vol. 1 No. 1 (2023): June 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/mjmf.v1i1.5

Abstract

The Ngawen Orchid MSME (Micro, Small, and Medium Enterprise) in Ngawen Hamlet, Ngawen Village, Muntilan District, Magelang Regency is a promising business opportunity. Apart from being in great demand, ornamental orchid plants also have a very high selling value. Orchid ornamental plants that are cultivated consist of three types: Dendrobium, Cattleya, and Phalaenopsis. This study aims to optimize profits by considering the number of plants and fertilizers used. This optimal profit can be achieved by applying the science of linear programming, one of which is the simplex method. The data collection techniques used in this study were interviews and direct observation of the Ngawen Orchid MSME. Based on the results of a linear programming analysis of the number of ornamental plants of Ngawen Orchid cultivation, optimal benefits were obtained from planting 40 Cattleya and 40 Phalaenopsis types orchids and there was no need to plant Dendrobium types, to get an optimal profit of IDR 4,600,000.
On Finding Shortest Path Over Vocational High School in Yogyakarta Based on Graph Theory Algorithm Rahmadi, Deddy
Mathematical Journal of Modelling and Forecasting Vol. 1 No. 2 (2023): December 2023
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/mjmf.v1i2.14

Abstract

Finding shortest path is one of problem in graph theory. This research aims to apply the Dijkstra algorithm in determining the shortest route for State Vocational School (SMK) students throughout Yogyakarta. State Vocational Schools throughout Yogyakarta have several locations spread across various regions, and determining the shortest path is crucial for the efficiency of students' time and transportation. Dijkstra's algorithm was chosen because of its ability to find the shortest path in a weighted graph, which can be applied to complex networks of school trajectories. The research method involved collecting geographic data on schools, available transportation, and distance between locations. This data is used to build a weighted graph that represents the transportation network between State Vocational Schools throughout Yogyakarta. The implementation of Dijkstra's algorithm is then carried out using python programming language. We hope that the research results can provide mapping of the shortest routes between schools, minimize student travel time, and increase transportation efficiency. The practical implications of this research include the development of an information system or application that can help students, teachers and schools in planning daily trips. Apart from that, the research results can also be a basis for developing methods for determining the shortest route in the context of other schools or similar environments.
DIMENSI METRIK CAMPURAN PADA GRAF DOUBLE FAN Rahmadi, Deddy
JURNAL DIFERENSIAL Vol 6 No 1 (2024): April 2024
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v6i1.12526

Abstract

Let G=(V(G),E(G)) be a simple connected graph. A vertex x∈ V(G) resolves the elements u,v∈ V(G)∪ E(G if d(x,u)≠ d(x,v). The mixed metric dimension, has been recently introduced. The mixed metric dimension (mdim(G)) of a graph G is the cardinality of a smallest set of vertices that resolves each pair of elements from V(G)∪ E(G). In this paper, we will identify the mixed metric dimension on double fan graph.
Dimensi k-Metrik Pada Graf Parasut Diperumum Rahmadi, Deddy; Susanti, Yeni
JURNAL DIFERENSIAL Vol 6 No 2 (2024): November 2024
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v6i2.17178

Abstract

Given a simple and connected graph $G=(V(G), E(G))$ and positive integer $k$. Set $S \subseteq V(G)$ is $k$-metric generator if for every pairs of distinct vertices $u,v \in V(G)$, there exists at least $k$ vertices $w_{1}, w_{2}, \ldots, w_{k} \in S$ such that $d(u,w_{i}) \neq d(v,w_{i})$ for every $i \in \{1,2,\ldots, k\}$, with $d(u,v)$ is length of shortest path form $u$ ke $v$. The $k$-metric generator with minimum cardinality is called $k$-metric bases, and the cardinalty is $k$-metric dimension of $G$denoted by $dim_{k}(G)$. This research will discuss the $k$-metric dimension of generalized parachute graphs.
Empowering Digital Pioneers: Optimalisasi Strategi Pemasaran di Era Transformasi Digital Firmansyah, Muhammad Azwar; Walda, Akbel Varianto Walda; Rahmadi, Deddy
Jurnal Pengabdian kepada Masyarakat Desa (JPMD) Vol. 6 No. 2 (2025): JPMD
Publisher : LP3M IAIFA Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58401/jpmd.v6i2.2539

Abstract

Abstract This study aims to empower local communities in rural areas through digital marketing training tailored for small business actors and community leaders. Implemented in Karangnongko Village, the program adopted a participatory and practice-based training model. The materials covered content creation, branding, and social media marketing strategies using platforms like TikTok, Instagram, and WhatsApp Business. The results showed improved digital literacy, increased participant awareness of online marketing strategies, and the establishment of practical skills to independently promote local products and tourism. This initiative demonstrates the potential of localized digital training as a model for inclusive digital transformation. Abstrak Penelitian ini bertujuan memberdayakan masyarakat pedesaan melalui pelatihan digital marketing yang ditujukan kepada pelaku UMKM dan tokoh masyarakat. Program dilaksanakan di Desa Karangnongko dengan pendekatan partisipatif dan berbasis praktik. Materi mencakup pembuatan konten, branding, dan strategi pemasaran melalui media sosial seperti TikTok, Instagram, dan WhatsApp Business. Hasil menunjukkan peningkatan literasi digital peserta, kesadaran terhadap strategi pemasaran daring, serta keterampilan praktis dalam mempromosikan produk dan wisata lokal secara mandiri. Inisiatif ini membuktikan efektivitas pelatihan digital berbasis komunitas dalam mendukung transformasi digital yang inklusif.
Dimensi Metrik pada Graf Hasil Operasi Join pada Graf Lengkap dan Graf Tangga Rahmadi, Deddy; Febriantono, Awal; Mufidah, Nurul; Hidayati, Tsalis Wifqi; Alisyah, Maulidatu Jauharoti
Square : Journal of Mathematics and Mathematics Education Vol. 7 No. 1 (2025)
Publisher : UIN Walisongo Semarang

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

Abstract

The metric dimension of a graph is defined as the minimum cardinality of a resolving set of the graph. This study aims to determine the metric dimension of graphs obtained from the join operation between a complete graph and a ladder graph. The analysis begins by determining the metric dimensions of the constituent graphs, namely the complete graph K_n and the ladder graph L_m. Furthermore, the metric dimension of the graph resulting from the join operation K_n + L_m is investigated. The results show that the metric dimension of the complete graph K_n is n-1, the metric dimension of the ladder graph L_m is 2, and the metric dimension of the graph K_n+L_m is n+1.
Pengembangan Dan Sosialisasi Aplikasi Sedekah Sampah RW 34 Padukuhan Banjeng Berbasis Android Rifky Tyo Ramadhani Santoso; Arga Bathara Dipoyono; Deddy Rahmadi
Joong-Ki : Jurnal Pengabdian Masyarakat Vol. 5 No. 2: Februari 2026
Publisher : CV. Ulil Albab Corp

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56799/joongki.v5i2.14999

Abstract

Permasalahan pengelolaan sampah di wilayah perkotaan semakin kompleks seiring meningkatnya jumlah penduduk dan terbatasnya kapasitas tempat pembuangan. Salah satu inisiatif untuk mengatasi permasalahan tersebut adalah melalui program Sedekah Sampah yang diinisiasi oleh pemuda RW 34 Padukuhan Banjeng. Namun, pelaksanaan program ini masih menghadapi kendala dalam hal penyebaran informasi, pencatatan hasil, dan koordinasi kegiatan. Untuk itu, kegiatan pengabdian kepada masyarakat ini bertujuan mengembangkan dan mengimplementasikan aplikasi Sedekah Sampah berbasis Android guna meningkatkan efektivitas program. Metode yang digunakan meliputi wawancara, observasi, pengembangan aplikasi menggunakan pendekatan Agile, sosialisasi, dan pelaksanaan kegiatan. Aplikasi yang dikembangkan memiliki fitur utama seperti jadwal kegiatan, notifikasi pengingat, panduan jenis sampah, dan pencatatan digital. Hasil pengabdian menunjukkan bahwa aplikasi ini mampu meningkatkan partisipasi warga, mempermudah pengelolaan data, serta memperkuat koordinasi antara pengelola dan masyarakat. Dengan demikian, pemanfaatan teknologi digital terbukti efektif dalam mendukung program pengelolaan sampah berbasis partisipatif dan berkontribusi terhadap peningkatan kesadaran lingkungan di masyarakat. Aplikasi ini diharapkan dapat terus dikembangkan sebagai solusi jangka panjang dalam mendukung konsep circular economy di tingkat lokal.
Dimensi Metrik Lokal pada Operasi Korona Graf Ular Segitiga dengan Graf Lintasan Orde Dua Zuha, Jaqueline Widad; Rahmadi, Deddy; Munandar, Arif
JURNAL DIFERENSIAL Vol 8 No 1 (2026): April 2026
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v8i1.27365

Abstract

Graphs were first introduced by Leonard Euler through the Königsberg Bridge problem in 1736. Let $G$ be a connected graph with vertex set $V(G)$ and edge set $E(G)$. The concept of distance in graphs leads to the notions of metric dimension and local metric dimension. Let $W \subset V(G)$ with $W = \{w_1, w_2, \dots, w_n\}$. The representation of a vertex $x \in V(G)$ with respect to $W$ is defined by $r(x \mid W) = (d(x, w_1), d(x, w_2), \dots, d(x, w_n)).$ The set $W$ is called a local resolving set of $G$ if for every pair of adjacent vertices $u, v \in V(G)$, $r(u \mid W) \ne r(v \mid W)$. The minimum cardinality of such a set is called the local metric dimension of $G$ and is denoted by $\dim_{\ell}(G)$. This research aims to determine the metric dimension and local metric dimension of the triangular snake graph $T_n$, as well as graphs obtained from the corona operation between $T_n$ and a path graph of order two. The method used is a literature study with an analysis of graph structure and vertex distances. The results show that both the metric dimension and the local metric dimension of the triangular snake graph are equal to $2$. Moreover, the local metric dimension of $T_n \odot P_2$ is $2n+1$, while that of $P_2 \odot T_n$ is $n+3$ for odd $n$ and $n+2$ for even $n$.
Co-Authors Abdillah, Nafal Maulana Ahsanti, Amalia Aida Haya Afifah Albar, Wakhid Fitri Alisyah, Maulidatu Jauharoti Alvian Nur Rohman Arga Bathara Dipoyono Arif Munandar Asiyam, Unzhurna Azzahra, Alya Camelia, Puspa Chaririyah,, Zakiyatul Dela Nuraini Safinka Dheana, Clarissa Elva Dhiya Anisah Utami Dia Cahya Wati Erika Putri Fatimah, Nadhifa Nur Febriantono, Awal Firmansyah, Muhammad Azwar Galih Fathurahman Ardiansyah Hakim Adidarma Hardina Sandariria Hariyani, Febri Dwi Herdianti, Redella Reffa Hidayati, Tsalis Wifqi Ichsan, Alfian Nur Nur Ighfirli Amanda Izzati Ilmi, Derrida Atsmarotul Insyafilla, Asyanada Kamal, Ahmad Mushthofa Karunika, Adelia Marsa Katya Royhana Dewi Khasanah, Aulia Nur Mada, Grandianus Seda Mastura, Yusrina Muchammad Abrori Muhammad Alfarizi Habibullah Muhammad Luthfi Muhammad Luthfi Muhammad Rejaus Syifa Muhammad Ridho Ramadhan Muhammad Solihin, Muhammad Mustamin, Miftah Aulia Nabila Putri Maharani Najihan, Hizbullah Naufal, Muhammad Hafizh Neisya Jamilatus Syarifah Ni'ma Ajrul Amilin Nugroho, Rizki Surya Nurul Mufidah, Nurul Prasetyani, Elvira Pratiwi, Hanifa Ika Dian Putri, Della Hidayana Putri, Tarisha Najwa Rahayu, Pipit Pratiwi Ramadhan, Muhammad Ridho Ramadhani, Ilma Nindita Ramadhani, Qonita Nadya Rifky Tyo Ramadhani Santoso Robiultsani, Muhammad Fauzi Nur Rohmah, Sinta Miftakhul Rohman, Alvian Nur Safinka, Dela Nuraini Sani, Sophia Carolina Setyaji, Fajar Dwi Styo, Anyelir Nurahmaida Nanda Sulthon Aqthoris Sama Umar Jihad Utami, Dhiya Anisah Vanesia, Valentina Aprilia Wahyuni, Winda Cahya Dwi Wakhid Fitri Albar Wakhid Fitri Albar Walda, Akbel Varianto Walda Yeni Susanti Zhafran Pradistyatama Kuncoro Zuha, Jaqueline Widad