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All Journal Proceedings of KNASTIK Epsilon: Jurnal Matematika Murni dan Terapan Teknik dan Ilmu Komputer Jurnal Edukasi dan Penelitian Informatika (JEPIN) Journal of Information Systems Engineering and Business Intelligence Journal of Animation & Games Studies Jurnal Teknologi dan Sistem Komputer Jurnal Pendidikan (Teori dan Praktik) JUTEI (Jurnal Terapan Teknologi Informasi) JURNAL TEKNIK INFORMATIKA DAN SISTEM INFORMASI Jurnal ULTIMATICS International Journal of Community Service Learning Jurnal Informatika JUPIKA: JURNAL PENDIDIKAN MATEMATIKA Jurnal Abdi Masyarakat Indonesia JP (Jurnal Pendidikan) : Teori dan Praktik GIAT: Teknologi untuk Masyarakat SERVIRISMA: Jurnal Pengabdian kepada Masyarakat International Journal of Information Technology and Computer Science Applications (IJITCSA)

Raden Gunawan Santosa

Program Studi Informatika, Universitas Kristen Duta Wacana

Author-ID : 370702

Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Public Health Social Sciences Transportation Other

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ANALISIS GAUSSIAN DAN EDGE CONNECTION DALAM PENAJAMAN DETEKSI TEPI MENGGUNAKAN METODE CANNY Kezia Satyawati; Junius Karel Tampubolon; R. Gunawan Santosa
Jurnal Informatika Vol 12, No 1 (2016): Jurnal Teknologi Komputer dan Informatika
Publisher : Universitas Kristen Duta Wacana

Edge detection is one of many ways to get information from an image without big data storage needed. In this research, the edge detecting is done by implementing Canny edge detection algorithm. The focus of this research is to analyze the effect of two variables of the first process of Canny, Gaussian filter smoothing, that is size of matrix and variance, to the sharpening of edge detection. The testing is done by changing the size of the matrix and the value of the variance. The results showed that the best matrix size and variance for sharp edge detection is less than 30x30 and 30.

PEMBUATAN APLIKASI PEMBELAJARAN PENCARIAN AKAR PERSAMAAN Amanda A. Diadema; Gunawan Santosa; Nugroho Agus Haryono
Jurnal Informatika Vol 9, No 1 (2013): Jurnal Informatika
Publisher : Universitas Kristen Duta Wacana

In numerical methods, finding the root of an equation involves iterations to find an estimated root approximating the original root. Several methods that can be used to find the root are Fixed-Point Iteration Method, Newton-Raphson Method, Secant Method and the Muller Method. This learning software is developed to provide a learning media for students to learn how to find the root of an equation. It contains animated explanation of the study material, case study and exercises. The software then tested to users using Usability Test, namely compatibility, consistency, flexibility, learnability, perceptual limitation, and minimal action. Tests performed to undergraduate students who have learned how to find equation root yield these results: Compatibility 86.13%, Consistency 83.73%, Flexibility 84.23%, Learnability 81.87%, Minimal Action 84.80%, and Perceptual Limitation 85.07%. On the other hand, tests performed to undergraduate students who have never learned how to find equation root yield these results: Compatibility 85.33%, Consistency 86.67%, Flexibility 83.47%, Learnability 85.87%, Minimal Action 87.20%, and Perceptual Limitation 82.67%.

PERBANDINGAN METODE LZ77, METODE HUFFMAN DAN METODE DEFLATE TERHADAP KOMPRESI DATA TEKS Christian Puji Nugraha; R. Gunawan Santosa; Lukas Chrisantyo A.A.
Jurnal Informatika Vol 10, No 2 (2014): Jurnal Teknologi Komputer dan Informatika
Publisher : Universitas Kristen Duta Wacana

Data compression is a very important process in the world that has been vastly using digital files, such as for texts, images, sounds or videos. Those digital files has a varied size and often taking disk storage spaces. To overcome this problem, many experts created compression algorithms, both for lossy and lossless compression. This research discusses about testing of four lossless compression algorithms that applied for text files, such as LZ77, Static Huffman, LZ77 combined with Static Huffman, and Deflate. Performance comparison of the four algorithms is measured by obtaining the compression ratio. From the test results can be concluded that the Deflate algorithm is the best algorithm due to the use of multiple modes, i.e. uncompressed mode, LZ77 combined with Static Huffman mode, and LZ77 combined with Dynamic Huffman Coding mode. The results also showed that the Deflate algorithm can compress text files and generates an average compression ratio of 38.84%.

Implementasi Transformasi Haar Wavelet untuk Deteksi Citra Jeruk Nipis yang Busuk Lidya Andriani Sunjoyo; R. Gunawan Santosa; Kristian Adi Nugraha
Jurnal Informatika Vol 12, No 2 (2016): Jurnal Teknologi Komputer dan Informatika
Publisher : Universitas Kristen Duta Wacana

Lime is a fruit that has been widely cultivated and used in Indonesia. Many products use this fruit in the production process. The process of sorting fruit is undeniably a very substantial early process. It is necessary for large-scale be aware of this in term of result and time required for the sorting process. Pattern Recognition is a discipline that focuses on classifying or picturing an object based on characteristics or main attribute of the object. In this research, the author implements Haar Wavelet Transformation method by characteristic extraction based on colour and texture , performs classification using K-Nearest Neighbor (k-NN) to detect indication of rotten lime and the grade of k on k-NN so the accuracy of the result could be acquired. Based on analysis result, Haar Wavelet Transformation method is able to be implemented to detect the indication of rotten lime and most optimal accuracy level of this system reaches the number of 85 percent.

IMPLEMENTASI DYNAMIC PROGRAMMING PADA PENENTUAN JENIS MATERIAL UTAMA BANGUNAN ARENA FUTSAL Andree Anthony; R. Gunawan Santosa; Yuan Lukito
Jurnal Informatika Vol 10, No 1 (2014): Jurnal Teknologi Komputer dan Informatika
Publisher : Universitas Kristen Duta Wacana

Building futsal court need some planning, especially about the materials needed to build a futsal court such as synthetic grass, roofs, walls, benches, and some other materials. Each of materials have many choices usually based on quality and price. Thus it needs a system to assist on calculating the optimum materials combination based on a specified budget. Minimax Route method are used with dynamic programming techniques to maximize the quality of materials while minimizing the price of materials chosen. Based on system testing conducted to futsal court owners in Yogyakarta, the implementation are helpful and have many useful information for someone who want to build futsal court.

Penyelesaian Masalah Symmetric Traveling Salesman Problem Dengan Jaringan Saraf Continuous Hopfield Net Apul Prima S; Sri Suwarno; R. Gunawan Santosa
Jurnal Informatika Vol 6, No 2 (2010): Jurnal Informatika
Publisher : Universitas Kristen Duta Wacana

Makalah ini membahas Penyelesaian Masalah Symmetric Traveling Salesman Problem Dengan Jaringan Saraf Continuous Hopfield Net. Fokus permasalahan adalah seorang salesman harus mengunjungi semua kota sebanyak satu kali dan salesman tersebut harus mulai dari dan kembali ke kota asal. Tujuannya adalah menentukan rute perjalanan dengan jarak total ataupun biaya yang paling minimum. Salah satu bentuk permasalahan TSP adalah symmetric TSP yang menandakan bahwa jarak antar kota bersifat simetrik dengan setiap kota terhubung satu sama lain. Solusi dari permasalahan ini adalah dengan membangun suatu sistem aplikasi untuk menyelesaikan permasalahan symmetric TSP. Adapun penulis menggunakan salah satu metode jaringan saraf tiruan yaitu Continuous Hopfield Net

Co-Authors Aditya Wikan Mahastama Amanda A. Diadema Andree Anthony Antonius Rachmat Chrismanto Apul Prima S Argo Wibowo Bhernardin Erryco Gagah Pattriskak Budi Susanto CHARIS AMARANTINI Christian Puji Nugraha Dea Alverina Devian Ricko Hutama Devri Riza Setyawan Elisabeth Adelia Widjojo Erdoria Kristina Erick Kurniawan Ernawati, Lussy Florentinus Alvin Sebastian Gabriella Amelia Prasetyo Gani Indriyanta Handi Hermawan Harianto Kristanto Harianto Kristanto Hermawan, Handi Joko Purwadi Jong Jek Siang Junius Karel Junius Karel Tampubolon Junius Karel Tampubolon Junius Karel Tampubolon Katon Wijana Kevin Valiant Kezia Satyawati Kristanto G, Steven Kristian Adi Nugraha Leo Sendra Lidya Andriani Sunjoyo Lukas Chrisantyo A.A. Matahari Bhakti Nendya Matahari Bhakti Nendya, Matahari Bhakti Nita Christina Saputro Nugroho Agus Haryono Priagung Satriyotomo Purwadi, Joko Rendy Setiawan Restyandito Robby Triadi Susanto Rohani Utomo Rosa Delima Ruby Vidian Hartanto Samuel Gandang Gunanto Santosa Raharjanto Selvy Welianto Setiadi, Hendro Sri Suwarno Sri Suwarno Sudarma, Wayan Edi Theresia Herlina R. Wayan Edi Sudarma Willy Sudiarto Rahardjo Willy Sudiarto Raharjo Yetli Oslan Yetli Oslan Yohanes Tennary Rinto Pradhana Yuan Lukito Yuan Lukito

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