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All Journal KADIKMA Jurnal Informatika Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika JFMR (Journal of Fisheries and Marine Research) Agroindustrial Technology Journal Al-Khidmah : Jurnal Pengabdian Kepada Masyarakat
Eko Waluyo
Balai Penelitian Tanaman Obat, Tawangmangu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Mathematics Other

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Penggabungan Objek Virtual Dengan Objek Nyata Pada Augmented Reality Untuk Museum Lampung Waluyo, Eko; DEW, ossy
Jurnal Informatika Vol 10, No 2 (2010): Jurnal Informatika
Publisher : IIB Darmajaya

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

Abstract

Information on historic objects in the Museum of Lampung are generally in the form of text that are static and limited. Information on the object as name of the object, as long as objects, useful objects, as well as functions found on museum objects shaped only static text with small font so it looks less informative and interesting. Application of augmented reality technology used to develop an application that is useful as a medium for additional information on the objects in the Museum of Lampung in the form of a virtual text, 3D objects, animations, audio, and video. This application was built using software libraries ARtoolkit to display additional information in the form of a virtual text, 3D objects, and animation. Macromedia Flash Player 8 is used as an additional interface for displaying information in the form of audio and video. This application was given the name ARMULA, which stands for Augmented Reality Museum of Lampung. With this application is expected to make the object more informative and interesting, so as to increase the interest and fascination of the public to the Museum of Lampung. Key words : ARMULA, ARtoolkit, Augmented Reality, Library, Museum Lampung 
PEWARNAAN GRACEFUL PADA GRAF HASIL OPERASI COMB GRAF SIKLUS DAN GRAF STAR Waluyo, Eko; Wahab, Abdul Aziz; Rudi, Mohammad
Kadikma Vol 14 No 1: April 2023
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v14i1.38552

Abstract

Penelitian ini merupakan jenis penelitian eksploratif dengan menggunakan metode deduktif aksiomatik dan metode pendeteksi pola. Penelitian ini bertujuan untuk mengetahui pewarnaan graceful dan bilangan kromatik pada graf siklus comb graf star. Dari penelitian ini ditemukan satu teorema baru yang terdiri dari tiga kasus mengenai bilangan kromatik graceful pada graf siklus comb graf star.
The METRIC COLORING OF RELATED WHEEL GRAPHS Waluyo, Eko
Kadikma Vol 13 No 3 (2022): Desember 2022
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v13i3.36894

Abstract

In this paper, graphs are finite and connected graph. Let be a vertex coloring of a graph G where two adjacent vertices may be colored the same color. Consider the color classes . For a vertex , representation color of v is the k-vector , where . If for every two adjacent vertices u and v of G, then f is called a metric coloring of G. The minimum k for which G has a metric k-coloring is called the metric chromatic number of G and is denoted by . In this paper, we study the metric chromatic numbers of related wheel graphs namely double wheel graph, web graph, friendship graph and helm graph.
BILANGAN KROMATIK GRACEFUL PADA SUBDIVISI GRAF SIKLUS COMB GRAF STAR Waluyo, Eko; Wisudaningsih, Endah Tri; Masruro, Masruro
Kadikma Vol 14 No 1: April 2023
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v14i1.38551

Abstract

Pewarnaan graceful merupakan kombinasi antara konsep graceful dan pewarnaan simpul. Pewarnaan graceful dilakukan dengan meminimalkan warna simpul dan sisi secara tepat. Sedangkan warna sisi diperoleh dari pewarnaan simpul yang bertetangga. Penelitian ini bertujuan untuk mengetahui pewarnaan graceful dan bilangan kromatik pada graf siklus comb graf star. Penelitian ini merupakan jenis penelitian eksploratif dengan menggunakan metode deduktif aksiomatik dan metode pendeteksi pola. Dari penelitian ini ditemukan satu teorema baru yang terdiri dari tiga kasus mengenai pewarnaan graceful pada graf siklus comb graf star.
The Development of Geometry recreation in the form of Math Maze and Learning Equipment Circle Subject on 8th Grade Junior High School Waluyo, Eko
Kadikma Vol 15 No 2 (2024): Agustus 2024
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v15i2.47431

Abstract

The aim of this research is to develop recreational geometry in the form of Math Maze and learning tools for Circle material. The development model used is the Plomp Development Model. The test subjects were Class VIII students at Argopuro Panti Middle School, Jember, academic year 2023/2024. The product developed obtained an average validation score of 3.24 and was included in the valid category, student activity was obtained on average 93.5% which was included in the very active category and from the student response questionnaire, it was obtained that 98% of students were very happy with learning-based learning. recreational geometry in the form of Math Maze. It can be said that the product developed is valid and practical Key words: recreational geometry, circles, teaching modules, LKPD
Analysis of Students' Errors in Solving Mathematical Problems Based on Field Independent and Field Dependent Cognitive Styles Virnanda, Lady's Intana; Lestari, Wahyu; Waluyo, Eko
Jurnal Mercumatika : Jurnal Penelitian Matematika dan Pendidikan Matematika Vol 9 No 2 (2025)
Publisher : Universitas Mercu Buana Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26486/jm.v9i2.4632

Abstract

Errors made by students in solving mathematical problems remain a common issue encountered in the learning process. Cognitive styles, such as Field Independent (FI) and Field Dependent (FD), are believed to influence how students comprehend and solve mathematical problems. Based on this premise, this study aims to analyze students' errors in solving mathematical problems by taking into account their cognitive styles, namely Field Independent (FI) and Field Dependent (FD). This research was conducted at SMAN 1 Besuk using a qualitative descriptive method and involved six students selected based on the results of the Group Embedded Figures Test (GEFT). Data were collected through the GEFT, problem-solving tests, and interviews, then analyzed using Newman's Error Analysis Procedure. The findings show that students with an FI cognitive style typically made errors in process skills (17.13%) and in constructing final answers (20.00%). In contrast, students with an FD cognitive style frequently made errors in problem transformation (45.71%), process skills (57.14%), and final answers (65.71%). Several factors contributing to these errors include lack of accuracy, rushing through tasks, misinterpreting implicit information in the problems, and failing to recheck final answers. The study concludes that cognitive style influences both the types and frequency of errors students make when solving mathematical problems. These findings highlight the importance for educators to develop instructional strategies that are better aligned with students' cognitive styles to enhance learning effectiveness.
Identification of Potential Consumer Segments of Smoked Tuna (Thunnus spp.) through E-commerce: Identification of Potential Consumer Segments of Smoked Tuna (Thunnus spp.) through E-commerce Ma'rifat, Tian Nur; Suprihatin, Febriyani Eka; Waluyo, Eko; Rahmawan, Arief
Agroindustrial Technology Journal Vol. 9 No. 1 (2025): Agroindustrial Technology Journal [ATJ]
Publisher : Universitas Darussalam Gontor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21111/atj.v9i1.13788

Abstract

This study explores consumer segmentation for smoked seafood in Indonesian e-commerce, aiming to identify distinct buyer groups and their preferences. The problem lies in the limited understanding of market segmentation and the absence of smoked tuna trade through e-commerce platforms in Indonesia, despite the country's significant tuna production capacity. The research categorizes different consumer segments by analyzing key factors shaping their purchasing decisions. Data were collected from 246 respondents who had purchased smoked tuna from Prigi Beach and had prior e-commerce experience. K-means clustering analysis was applied to classify respondents into two clusters based on their demographic characteristics, behaviors, and perceptions. The study observed three key behavioral variables: Perceived Social Norm (PSN), Perceived Relative Advantage (PRA), and Perceived Health Benefit (B). Cluster 1, comprising 53% of respondents, is characterized by younger, health-conscious individuals, predominantly female, with a higher frequency of purchasing through e-commerce. They perceive e-commerce as a faster, more cost effective option and show stronger intentions to buy smoked seafood due to its nutritional value, distinctive taste, halal certification, affordability, and convenience. In contrast, Cluster 2, accounting for 47% of respondents, has a more varied demographic and lower frequency of online purchases. The findings suggest that Cluster 1 presents a more promising target for producers. By focusing on this segment's preferences and leveraging digital platforms, businesses can optimize their marketing strategies, enhance consumer engagement, and expand market reach. These results highlight the potential of e-commerce as a transformative platform for the seafood industry, offering insights into consumer segmentation and strategic opportunities for market growth. Keywords: cluster; consumers; market potential; online platforms
UTILIZATION OF LINGO APPLICATION IN OPTIMIZING SNACKS USING LINEAR PROGRAM: PEMANFAATAN APLIKASI LINGO DALAM OPTIMALISASI MAKANAN RINGAN MENGGUNAKAN PROGRAM LINEAR Djeni, Darwin; Waluyo, Eko; Hasanah, Husnul
Kadikma Vol. 15 No. 3 (2024): Desember 2024
Publisher : Department of Mathematics Education , University of Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/kdma.v15i3.53710

Abstract

Micro-enterprises in the snack food sector often face various challenges, including limited raw materials, high production costs, and fluctuating market demand. This study aims to optimize the production of snack foods such as sausage corndogs, cheese corndogs, and chocolate banana rolls (piscok) through the application of linear programming using the LINGO software. The research employs a quantitative descriptive approach with field observations conducted on the researcher’s own business located in Bulang Village, Probolinggo Regency. A mathematical model was developed by taking into account real-world constraints such as production capacity and raw material availability, with the goal of maximizing profit. The analysis using LINGO indicates that the optimal production combination consists of 20 sausage corndogs, 5 cheese corndogs, and 20 piscok per day, resulting in a maximum daily profit of IDR 75,000. These findings suggest that the use of LINGO software can significantly assist micro-entrepreneurs in managing resources more efficiently and enhancing the profitability of snack food businesses.
Karakteristik Proximate dan Fisika Premium Fish Patties (Clarias sp.) dengan Formulasi Subtitusi Daging Ayam Potong (Gallus gallus domesticus) Kusuma, Bayu; Dayuti, Sri; Waluyo, Eko; Perdana, Angga Wira; Syihab Q.R.M., Ahmad Fahmi; Habibie, Intan Yusuf
JFMR (Journal of Fisheries and Marine Research) Vol. 4 No. 3 (2020): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2020.004.03.11

Abstract

The use of catfish for premium fish patties products has a weakness in the low of gel strength. The substitution of catfish with chicken is expected to solve this problem. Three substitution formulations of catfish using chicken were carried out experimentally to determine the proximate variables and physics of premium fish patties. The results showed that the substitution of catfish using chicken in premium fish patties greatly affected the physical characteristic, especially texture. This is in contrast to the results that the substitution treatment does not affect the proximate and color characteristics.
Pendampingan Masyarakat dalam Membangun Kesadaran Pedagang melalui Metode Edukasi di Pasar Simpang Desa Mulyasari Bayongbong Garut Karmila, Wati; Nurdin, Dadan; Waluyo, Eko
Al-Khidmah : Jurnal Pengabdian Kepada Masyarakat Vol 3 No 2 (2025): Al-Khidmah : Jurnal Pengabdian Kepada Masyarakat
Publisher : STAI Pelabuhan Ratu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51729/alkhidmah.321764

Abstract

Fenomena permasalahan pengelolaan sampah di Pasar Simpang, Desa Mulyasari, Bayongbong, Garut, masih menjadi tantangan utama dalam pengelolaan lingkungan, mengingat pasar berfungsi sebagai pusat ekonomi masyarakat. Pengelolaan sampah yang kurang tepat umumnya berupa plastik, botol, kaca, kertas, sisa makanan, dan lainnya menjadi ancaman serius karena berkontribusi terhadap pencemaran lingkungan. Kondisi ini dapat membahayakan kesehatan masyarakat, menimbulkan penyakit kulit, gangguan pernapasan, kualitas air yang berbau tidak sedap, bahkan meningkatkan risiko banjir. Untuk menjawab permasalahan tersebut, dilakukan kegiatan pengabdian masyarakat melalui kolaborasi mahasiswa KKN 2025, dosen IMDA Garut, aparat desa, masyarakat, serta para pedagang di Pasar Simpang. Kegiatan meliputi edukasi interaktif melalui Lokakarya 1 dan sosialisasi langsung kepada pedagang dan pembeli. Selain itu, kerja sama dengan pengelola pasar dan TPS 3R (Tempat Pengolahan Sampah Reduce, Reuse, Recycle) dijalin guna menjamin keberlanjutan program. Hasil kegiatan menunjukkan adanya peningkatan kesadaran masyarakat dalam memilah sampah, perubahan perilaku pedagang yang lebih proaktif, serta terciptanya lingkungan pasar yang lebih bersih. Dengan pendekatan edukatif dan dukungan fasilitas yang memadai, program ini diharapkan menjadi model pengelolaan sampah berkelanjutan di pasar tradisional lainnya, sehingga tercipta lingkungan yang lebih bersih dan mendukung kebijakan pengelolaan sampah ramah lingkungan.
Co-Authors Arief Rahmawan Darwin Djeni Dayuti, Sri Hasanah, Husnul Intan Yusuf Habibie Karmila, Wati Kusuma, Bayu Masruro Masruro, Masruro Nurdin, Dadan ossy DEW Perdana, Angga Wira Rudi, Mohammad Suprihatin, Febriyani Eka Syihab Q.R.M., Ahmad Fahmi Tian Nur Ma’rifat Virnanda, Lady's Intana Wahab, Abdul Aziz Wahyu Lestari Wisudaningsih, Endah Tri