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All Journal Unisda Journal of Mathematics and Computer Science (UJMC) JOURNAL OF INFORMATION SYSTEM MANAGEMENT (JOISM) International Journal of Applied Mathematics, Sciences, and Technology for National Defense Jurnal Pengabdian Widya Dharma
Niken Retnowati
Universitas Widya Dharma Klaten
Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Education Engineering Health Professions Languange, Linguistic, Communication & Media Mathematics Physics

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PERBANDINGAN ALGORITMA DJIKSTRA DAN WARSHALL DALAM PENENTUAN LINTASAN TERPENDEK KE KOTA KLATEN Niken Retnowati; Rizka Safitri Lutfiyani
Unisda Journal of Mathematics and Computer Science (UJMC) Vol 4 No 2 (2018): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department of Mathematics and Natural Sciences Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (676.572 KB) | DOI: 10.52166/ujmc.v4i2.1132

Abstract

Search for the shortest path is a problem that is faced when we want to travel or go somewhere. Klaten City is one of the cities in Central Java. Cities around Klaten include Boyolali. When we go to Klaten city there are several alternative roads or trails that can be chosen from Boyolali. Mathematically this condition can be applied in graphical form to find the shortest path to the city of Klaten. Determination of the shortest path can be found using the Djikstra Algorithm and the Warshall Algorithm. Researchers tried to compare the two methods to get the most optimal result. From the study concluded that the Djikstra algorithm is more effective than the Warshall algorithm for the shortest path from Boyolali to Klaten.
VIRTUAL FITTING ROOM SEPATU LURIK BERBASIS AUGMENTED REALITY Aryati Wuryandari; Niken Retnowati
Journal of Information System Management (JOISM) Vol. 5 No. 1 (2023): Juni
Publisher : Universitas Amikom Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24076/joism.2023v5i1.1156

Abstract

Pelaku usaha mikro, kecil, dan menengah (UMKM) menjadi yang paling terdampak selama pandemi Covid-19. UMKM mengalami penurunan penjualan dan keuntungan hingga lebih dari 50%. UMKM sepatu lurik pun beralih untuk fokus pemasaran produknya melalui online seperti melalui website ataupun marketplace. Pada umumnya, calon pembeli sepatu lurik harus datang langsung ke toko untuk mencoba sepatu yang diinginkan, tetapi dengan perancangan aplikasi berbasis Augmented Reality (AR) yakni virtual fitting room sepatu dapat menjadi salah satu solusi yang dapat digunakan UMKM sepatu lurik untuk memasarkan produknya lebih luas tanpa harus datang langsung ketoko. Aplikasi yang dikembangkan pada penelitian ini berbasis Android dan bekerja dengan cara menggabungkan model sepatu dalam dunia virtual dengan kaki pengguna pada dunia nyata yang ditangkap oleh kamera depan smartphone pengguna. Pembangunan aplikasi dilakukan dengan metode foot tracking agar model sepatu lurik dapat ditampilkan tepat pada kaki calon pembeli secara tepat.
Pewarnaan Graf Dalam Penentuan Jadwal Ujian Mahasiswa (Studi Kasus Prodi Teknik Informatika Unwidha) Niken Retnowati; Aryati Wuryandari; Agustinus Suradi
UJMC (Unisda Journal of Mathematics and Computer Science) Vol 11 No 1 (2025): Unisda Journal of Mathematics and Computer Science
Publisher : Mathematics Department, Faculty of Sciences and Technology Unisda Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52166/ujmc.v11i1.9440

Abstract

Often, scheduling final-year student exams becomes a problem within the scope of study programs, one of which is the Informatics Engineering study program at Widya Dharma University, Klaten. This is because the schedule of each examining lecturer is not the same, and besides that, the space available also varies every day. There are several alternative algorithms that can be used to solve scheduling problems, one of which is graph coloring. Graph coloring can include points, lines, and areas. In this research, researchers will try to divide student exam schedules using dot coloring, where the dot coloring algorithm used is Welch Powel The Welch Powell algorithm is the most frequently used graph coloring algorithm. This algorithm starts by sorting the degrees of the graph from largest to smallest, then assigns a color to the vertex at the largest vertex and assigns a different color to the vertices below that are not adjacent to that vertex. Keywords: Welch-Powell algorithm, graph, graph coloring.
On the normal product and modular product of product fuzzy graphs with applications to defense communication networks Fery Firmansah; Niken Retnowati; Tasari
International Journal of Applied Mathematics, Sciences, and Technology for National Defense Vol. 4 No. 1 (2026): International Journal of Applied Mathematics, Sciences, and Technology for Nati
Publisher : FoundAE

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58524/app.sci.def.v4i1.1147

Abstract

Background: This study focuses on the development of new operations of product fuzzy graphs, specifically the normal product and modular product operations. The normal product of product fuzzy graphs is used to build infrastructure with maximum path redundancy. Meanwhile, the modular product operation of product fuzzy graphs is implemented to optimize the alignment of operational processes and information security. Aims: This study aims to define the normal product and modular product of product fuzzy graphs, define the properties of the normal product and modular product of product fuzzy graphs, and to apply to defense communication networks. Method: The research stages consist of formulating the definition of the normal product and modular product of product fuzzy graphs along with its properties and applying to defense communication networks. Results: The results of the study show that the normal product and modular product of product fuzzy graph is fuzzy graph, the normal product and modular product of strong product fuzzy graph is strong, consequently, the normal product and modular product of complete product fuzzy graph is strong. Conclusion: The application of the normal product and modular product of product fuzzy graph can produce a more compact defense communication network.
PELATIHAN PENYUSUNAN KUIS INTERKATIF MENGGUNAKAN CANVA BAGI GURU Muhammad Ridlo Yuwono; Tasari; M. Wahid Syaifuddin; Joko Sungkono; Yuliana; Fery Firmansah; Septiana Wijayanti; Niken Retnowati
WIDHARMA - Jurnal Pengabdian Widya Dharma Vol. 5 No. 01 (2026): Januari 2026
Publisher : LPPM Universitas Widya Dharma Klaten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54840/widharma.v5i01.462

Abstract

The purpose of this community service activity is to provide teachers with skills to be able to create interactive quizzes using Canva templates and AI Canva through training. The community service team invited Muhammadiyah Plus Middle School, North Klaten, to collaborate in carrying out this activity. The method used in this community service activity was face-to-face training which was held on July 26, 2025. Participants were asked to complete assignments given by the community service team which were collected via Google Drive at the end of the training activity. The results of this training activity were that the training participants were able to create interactive quizzes using templates available in Canva and were able to automatically create interactive quizzes using AI Canva according to the desired prompts according to the subjects they were studying.).
PELATIHAN KETRAMPILAN STATISTIK DASAR DALAM AUDIT ENERGI RUMAH TANGGA PADA IBU-IBU PKK RT 03 SURODADI Niken Retnowati; Septiana Wijayanti; Fery Firmansah; M. Wahid Syaifuddin; Tasari Tasari; Muhammad Ridlo Yuwono; Joko Sungkono; Yuliana Yuliana
WIDHARMA - Jurnal Pengabdian Widya Dharma Vol. 5 No. 02 (2026): Agustus 2026
Publisher : LPPM Universitas Widya Dharma Klaten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54840/widharma.v5i02.579

Abstract

Energy sustainability and its impact on climate change have become critical global and national priorities, with the household sector being a major contributor to electricity consumption. In the RT 03 Surodadi neightborhood, while there is a growing awareness of energy conservation among the PKK women (Family Welfare Movement), their efforts remain unmeasured and trial based. The primary challenge lies in the laack of technical skills to transform raw consumption data into actionable insights for identifying energy-intensive appliances. This community service project addresses this gap by providing training in basic statistics, including average calculations, percentages, and data visualization. By mastering these tools, participants will be able to independently conduct simple energy audits and develop data driven recomendation for household efficiency. Ultimately, this program aims to empower the women of RT 03 Surodadi to become analytical agents of change in promoting smartenergy conservation within their community.
Co-Authors Agustinus Suradi Fery Firmansah Joko Sungkono M. Wahid Syaifuddin Rizka Safitri Lutfiyani Tasari, Tasari Wijayanti, Septiana Yuliana