Articles
RANCANG BANGUN PERANGKAT LUNAK UNTUK PERHITUNGAN BESAR ARUS HUBUNG SINGKAT PADA SISTEM DISTRIBUSI LISTRIK DI KAPAL
Sarno, Riyanarto;
Pudjiantara, Margo;
Amaliah, Bilqis
JUTI: Jurnal Ilmiah Teknologi Informasi Vol 3, No 2 Juli 2004
Publisher : Department of Informatics, Institut Teknologi Sepuluh Nopember
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DOI: 10.12962/j24068535.v3i2.a260
Salah satu penunjang untuk pengamanan jaringan listrik kapal adalah mengetahui berapa besar arus hubung singkat pada bus-bus tertentu di jaringan listrik kapal. Selama ini PT.PAL dalam hal menghitung hubung arus hubung singkat dilakukan secara manual. Untuk lebih meningkatkan efektifitas dan effisiensi kerja, maka pada penelitian ini penulis akan membuat program komputer untuk menghitung besar arus hubung singkat pada sistem distribusi listrik di kapal. Untuk ini penulis akan merancang suatu program yang terkenal dengan istilah user friendly yaitu dengan menggunakan program yang dapat menggambarkan diagram satu garis system tenaga listrik. Program ini mendukung interaksi langsung antara pemakai dan diagram satu garis Metoda yang dipakai dalam perhitungan ini adalah metoda matrik impedansi Z-bus. Dengan mengetahui besar arus hubung singkat 3 fasa maka dapat ditentukan besar breaking capacity dari peralatan pengaman. Manfaat lain yang dapat diperoleh adalah untuk menentukan setting pengaman. Kata kunci : metoda matrik impedansi Z-bus, breaking capacity
PENERAPAN ALGORITMA WEIGHTED TREE SIMILARITY UNTUK PENCARIAN SEMANTIK
Sarno, Riyanarto;
Rahutomo, Faisal
JUTI: Jurnal Ilmiah Teknologi Informasi Vol 7, No 1, Januari 2008
Publisher : Department of Informatics, Institut Teknologi Sepuluh Nopember
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DOI: 10.12962/j24068535.v7i1.a60
Full-text search and metadata-enabled search have weakness in the precision of the searched article. This research offers weighted tree similarity algorithm combined with cosine similarity method to count similarity in semantic search. In this method metadata is constructed based on the tree of labelled node, labelled and weighted branch. The structure of tree metadata is constructed based on semantic information like taxonomi, ontologi, preference, synonim, homonym and stemming. From testing result, the precision of search using weighted tree similarity algorithm is better that full-text search and metadata-enabled search.
NOSQL Ontology Storage for Indonesian Regional Folk Songs
Arifin, Mohammad Nazir;
Putra, Fauzan Prasetyo Eka;
Sarno, Riyanarto;
Ariyani, Nurul Fajrin;
Gelu, Leonard Peter
Prosiding International conference on Information Technology and Business (ICITB) 2017: INTERNATIONAL CONFERENCE ON INFORMATION TECHNOLOGY AND BUSINESS (ICITB) 3
Publisher : Prosiding International conference on Information Technology and Business (ICITB)
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NOSQL databases are in the base of storage of Big Data. They can store large volumes of structured, semi-structured, and unstructured data. Using NOSQL database to store ontology can take advantage of Big Data storage. This give benefits in storing Indonesian folk songs storage that usually vary and have sparse / incomplete data. This paper illustrates an approach to store data of Indonesia folk songs in NOSQL based database. We choose to deal with MongoDB. We present our steps of approach in storing, collecting, analyzing and retrieving ontology on NOSQL based database. Keywords : Ontology, NOSQL, MongoDB, Indonesian Folk song, and Ontology Storage.
Design and Implementation of Inventory Domain for Enterprise Resource Planning Using SOA and Workflow Approach
Sunaryono, Dwi;
Ahmadiyah, Adhatus Solichah;
Sarno, Riyanarto;
Setiaputra G, Riswandy
IPTEK Journal of Proceedings Series Vol 1, No 1 (2014): International Seminar on Applied Technology, Science, and Arts (APTECS) 2013
Publisher : Institut Teknologi Sepuluh Nopember
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DOI: 10.12962/j23546026.y2014i1.414
Enterprise resource planning (ERP) is a business management system which integrates several domains of enterprise business processes. Among several ERP domains, inventory is one of the basic requirement domains of an enterprise. Inventory holds three important functionalities, i.e., stock request, delivery, and stock control. In this paper, we have designed inventory domain using Service-oriented Architecture (SOA) to accommodate data communication between inventory domain and other ERP domains by providing services and employed Workflow approach to automate business process in inventory domain. The implementation confirms that our design has successfully accommodated the business processes in inventory domain. In term of technology, Workflow approach is beneficial to develop inventory domain application which is responsive to sub business process changes. In addition, the usage of SOA makes the developed inventory domain application is capable to provide services to be consumed by the other ERP domains.
Process Mining in Supply Chains: A Systematic Literature Review
Bambang Jokonowo;
Jan Claes;
Riyanarto Sarno;
Siti Rochimah
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 6: December 2018
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijece.v8i6.pp4626-4636
Performance analysis and continuous process improvement efforts are often supported by the construction of process models representing the interactions of the partners in the supply chain. This study was conducted to determine the state of the art in the process mining field, specifically in the context of cross-organizational process. The Systematic Literature Review (SLR) method is used to review a collection of twenty-one papers that are classified according to the Artifact framework of Hevner, et al. and within the Process Mining framework of Van der Aalst. In the reviewed papers, the authors conducted a variety of techniques to establish the event log, which is then used to perform the process mining analysis. Eight of the reviewed papers focus on the definition of concepts or measures. Five of the papers describe models and other abstractions that are used as a theoretical basis for process mining in the context of supply chains. The majority twenty of papers describe some kind of informal method or formal algorithm to perform process mining analysis. Nine of the papers that propose a formal algorithm also present an accompanying software implementation. Eight papers discuss the data preparation challenges and twelve papers discuss process discovery techniques.
Incorporating Index of Fuzziness and Adaptive Thresholding for Image Segmentation
Umi Salamah;
Riyanarto Sarno;
Agus Zainal Arifin;
Anto Satriyo Nugroho;
Ismail Eko Prayitno Rozi;
Puji Budi Setia Asih
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 4: August 2018
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijece.v8i4.pp2406-2418
Binary Segmentation of an image played an important role in many image processing application. An image that was having no bimodal (or nearly) histogram accompanied by low-contrast was still a challenging segmentation problem to address. In this paper, we proposed a new segmentation strategy to images with very irregular histogram and had not significant contrast using index of fuzziness and adaptive thresholding. Index of fuzziness was used to determine the initial threshold, while adaptive thresholding was used to refine the coarse segmentation results. The used data were grayscale images from related papers previously. Moreover, the proposed method would be tested on the grayscale images of malaria parasite candidates from thickblood smear that had the same problem with this research. The experimental results showed that the proposed method achieved higher segmentation accuracy and lower estimation error than other methods. The method also effective proven to segment malaria parasite candidates from thickblood smears image.
Music Emotion Classification based on Lyrics-Audio using Corpus based Emotion
Fika Hastarita Rachman;
Riyanarto Sarno;
Chastine Fatichah
International Journal of Electrical and Computer Engineering (IJECE) Vol 8, No 3: June 2018
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijece.v8i3.pp1720-1730
Music has lyrics and audio. That’s components can be a feature for music emotion classification. Lyric features were extracted from text data and audio features were extracted from audio signal data.In the classification of emotions, emotion corpus is required for lyrical feature extraction. Corpus Based Emotion (CBE) succeed to increase the value of F-Measure for emotion classification on text documents. The music document has an unstructured format compared with the article text document. So it requires good preprocessing and conversion process before classification process. We used MIREX Dataset for this research. Psycholinguistic and stylistic features were used as lyrics features. Psycholinguistic feature was a feature that related to the category of emotion. In this research, CBE used to support the extraction process of psycholinguistic feature. Stylistic features related with usage of unique words in the lyrics, e.g. ‘ooh’, ‘ah’, ‘yeah’, etc. Energy, temporal and spectrum features were extracted for audio features.The best test result for music emotion classification was the application of Random Forest methods for lyrics and audio features. The value of F-measure was 56.8%.
Music fingerprinting based on bhattacharya distance for song and cover song recognition
Riyanarto Sarno;
Dedy Rahman Wijaya;
Muhammad Nezar Mahardika
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 2: April 2019
Publisher : Institute of Advanced Engineering and Science
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DOI: 10.11591/ijece.v9i2.pp1036-1044
People often have trouble recognizing a song especially, if the song is sung by a not original artist which is called cover song. Hence, an identification system might be used to help recognize a song or to detect copyright violation. In this study, we try to recognize a song and a cover song by using the fingerprint of the song represented by features extracted from MPEG-7. The fingerprint of the song is represented by Audio Signature Type. Moreover, the fingerprint of the cover song is represented by Audio Spectrum Flatness and Audio Spectrum Projection. Furthermore, we propose a sliding algorithm and k-Nearest Neighbor (k-NN) with Bhattacharyya distance for song recognition and cover song recognition. The results of this experiment show that the proposed fingerprint technique has an accuracy of 100% for song recognition and an accuracy of 85.3% for cover song recognition.
Determining Process Model Using Time-Based Process Mining and Control-Flow Pattern
Riyanarto Sarno;
Widyasari Ayu Wibowo;
Kartini Kartini;
Yutika Amelia;
Kelly Rossa
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 14, No 1: March 2016
Publisher : Universitas Ahmad Dahlan
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DOI: 10.12928/telkomnika.v14i1.3257
Determining right model of business process from event log is the purpose of process discovery. However some problems i.e the inability to discover OR, noise and event log incompleteness are emmerged while determining right model of business process. First, OR relation is often discovered as AND relation. Second, noise problem is occured when there are truncated and low frequency traces in event log. Thus control-flow pattern is used to solve issues of same noise relation frequency hence it discovers relation based on transaction function of activity. Consequently, it can refine non noise relation in business process model. Third, incompleteness leads to incorrect discovery of parallel process model; therefore we used Timed-based Process Mining which utilized non-linear dependence to solve the incompleteness. Finally this paper proposed combination of Timed-based Process Mining and control-flow pattern to discover OR and handle same frequency noise and incompleteness. From the experiment in section 3, this proposed method manages to get right process model from event log.
Recent development in electronic nose data processing for beef quality assessment
Riyanarto Sarno;
Dedy Rahman Wijaya
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 1: February 2019
Publisher : Universitas Ahmad Dahlan
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DOI: 10.12928/telkomnika.v17i1.10565
Beef is kind of perishable food that easily to decay. Hence, a rapid system for beef quality assessment is needed to guarantee the quality of beef. In the last few years, electronic nose (e-nose) is developed for beef spoilage detection. In this paper, we discuss the challenges of e-nose application to beef quality assessment, especially in e-nose data processing. We also provide a summary of our previous studies that explains several methods to deal with gas sensor noise, sensor array optimization problem, beef quality classification, and prediction of the microbial population in beef sample. This paper might be useful for researchers and practitioners to understand the challenges and methods of e-nose data processing for beef quality assessment.