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All Journal International Journal of Electrical and Computer Engineering IAES International Journal of Artificial Intelligence (IJ-AI) TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Teknologi Informasi dan Ilmu Komputer Journal of Information Technology and Computer Science Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Indonesian Journal of Electrical Engineering and Computer Science Bubungan Tinggi: Jurnal Pengabdian Masyarakat Jurnal Nasional Teknik Elektro dan Teknologi Informasi Edu Komputika Journal

Komang Candra Brata

Universitas Brawijaya

Author-ID : 243317

Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Social Sciences Other

Published : 167 Documents Claim Missing Document

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Location-Based Augmented Reality Information for Bus Route Planning System Komang Candra Brata; Deron Liang; Sholeh Hadi Pramono
International Journal of Electrical and Computer Engineering (IJECE) Vol 5, No 1: February 2015
Publisher : Institute of Advanced Engineering and Science

Bus Route Planner applications will unfold their full potential when bus passengers are enabled to get information about the shortest path route, make a travel plan and get the correct buses in order to reduce the travel time. However, all these information are provided in text based and map view. It is difficult to understand them for the person who does not know place in the map. This paper describes the android base application of Augmented Reality (AR) that has feature to support the action of a bus user in an innovative and dynamic ways by putting additional information layer on smart phone camera screen and give the instruction assistant that leading the user way to the nearest bus stop. The experimental results show that, the overall functional of proposed application can be run well in various type of Android smart phone. When compared with similar bus traveling applications, the proposed application works more efficient.

User experience improvement of japanese language mobile learning application through mental model and A/B testing Komang Candra Brata; Adam Hendra Brata
International Journal of Electrical and Computer Engineering (IJECE) Vol 10, No 3: June 2020
Publisher : Institute of Advanced Engineering and Science

Advances in smartphone technology have led to the strong emergence of mobile learning (m-learning) on the market to support foreign language learning purposes, especially for the Japanese language. No matter what kind of m-learning application, their goal should help learners to learn the Japanese language independently. However, popular Japanese m-learning applications only accommodate on enhancing reading, vocabulary and writing ability so that user experience issues are still prevalent and may affect the learning outcome. In the context of user experience, usability is one of the essential factors in mobile application development to determine the level of the application’s user experience. In this paper, we advocate for a user experience improvement by using the mental model and A/B testing. The mental model is used to reflect the user’s inner thinking mode. A comparative approach was used to investigate the performance of 20 high-grade students with homogenous backgrounds and coursework. User experience level was measured based on the usability approach on pragmatic quality and hedonic quality like effectiveness (success rate of task completion), efficiency (task completion time) and satisfaction. The results then compared with an existing Japanese m-learning to gather the insight of improvement of our proposed method. Experimental results show that both m-learning versions proved can enhance learner performance in pragmatic attributes. Nevertheless, the study also reveals that an m-learning that employs the conversational mental model in the learning process is more valued by participants in hedonic qualities. Mean that the proposed m-learning which is developed with the mental model consideration and designed using A/B testing is able to provide conversational learning experience intuitively.

An effective approach to develop location-based augmented reality information support Komang Candra Brata; Deron Liang
International Journal of Electrical and Computer Engineering (IJECE) Vol 9, No 4: August 2019
Publisher : Institute of Advanced Engineering and Science

Using location-based augmented reality (AR) for pedestrian navigation can greatly improve user action to reduce the travel time. Pedestrian navigation differs in many ways from the conventional navigation system used in a car or other vehicles. A major issue with using location-based AR for navigation to a specific landmark is their quality of usability, especially if the active screen is overcrowded with the augmented POI markers which were overlap each other at the same time. This paper describes the user journey map approach that led to new insights about how users were using location-based AR for navigation. These insights led to a deep understanding of challenges that user must face when using location-based AR application for pedestrian navigation purpose, and more generally, they helped the development team to appreciate the variety of user experience in software requirement specification phase. To prove our concept, a prototype of intuitive location-based AR was built to be compared with existing standard-location based AR. The user evaluation results reveal that the overall functional requirements which are gathered from user journey have same level of success rate criteria when compared with standard location-based AR. Nevertheless, the field study participants highlighted the extended features in our prototype could significantly enhance the user action on locating the right object in particular place when compared with standard location-based AR application (proved with the required time).

Comparative study of user experience on mobile pedestrian navigation between digital map interface and location-based augmented reality Komang Candra Brata; Deron Liang
International Journal of Electrical and Computer Engineering (IJECE) Vol 10, No 2: April 2020
Publisher : Institute of Advanced Engineering and Science

Fast-paced mobile technology development has permitted augmented reality experiences to be delivered on mobile pedestrian navigation context. The fact that the more prevalent of this technology commonly will substituting the digital map visualization to present the geo-location information is still debatable. This paper comprises a report on a field study comparing about user experience when interacting with different modes of mobile electronic assistance in the context of pedestrian navigation interfaces which utilize location-based augmented reality (AR) and two-dimensional digital map to visualize the points of interest (POIs) location in the vicinity of the user. The study was conducted with two subsequent experiments in the Zhongli District, Taoyuan City, Taiwan. The study involved 10 participants aged between 22 and 28 years with different experiences in using smartphones and navigation systems. Navigation performance was measured based on a usability approach on pragmatic quality and hedonic quality like effectiveness (success rate of task completion), efficiency (task completion time) and satisfaction in real outdoor conditions. The evaluation findings have been cross-checked with the user’s personal comments. We aim at eliciting knowledge about user requirements related to mobile pedestrian interfaces and evaluating user experience from pragmatic and hedonic viewpoints. Results show that in the context of pedestrian navigation, digital map interfaces lead to significantly better navigation performance in pragmatic attributes in comparison to AR interfaces. Nevertheless, the study also reveals that location-based AR is more valued by participants in hedonic qualities and overall performance.

A new perspective of refractive error calculation with mobile application Komang Candra Brata; Mukhammad Sharif Hidayatulloh; Lutfi Fanani; Adam Hendra Brata
International Journal of Electrical and Computer Engineering (IJECE) Vol 10, No 5: October 2020
Publisher : Institute of Advanced Engineering and Science

In many situations, not standardized and limited access to eye health care in several regions of Indonesia becomes the main challenge for myopia patients to measure and monitor their current refractive error condition. Many apps were proposed to provide low-cost alternative measurement tools rather than expensive tools such as Phoropter with Snellen chart and Retinoscopy, but still, those apps need an Internet connection and manually complex steps to operate. These conditions make myopia patients reluctant to use this kind of service. In this regard, we propose an intuitive diopter level measurement app based on mobile application setup, which implements the concept of measure the user face to smartphone screen distance for the rapid diopter calculation processes and at the same time provides a low-cost alternative refractive measurement tool. This paper highlights our experiences when developing a mobile application that can help patients with myopia measuring their blur line distances and evaluate their diopter levels independently. We conduct a number of human trials with the device on a controlled environment to demonstrate the ability of the proposed app to measure the diopter level. The experimental results show that the proposed app is quite successful in measuring the diopter level of myopia patients with a relatively small range of calculation errors compared to optometrist measurement results.

Usability improvement of public transit application through mental model and user journey Komang Candra Brata; Aryo Pinandito; Nurizal Dwi Priandani; Mahardeka Tri Ananta
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 19, No 2: April 2021
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v19i2.18323

Using a mobile application that is featured with local public transit information can greatly improve user action, as well as assisting travelers to have a better experience while taking public transit services. Crowd environment inside a public transit is one of the most frequent causes that lead difficulties to passengers when they engaging their mobile devices to access their apps or in some conditions. Finding crucial information such as stops points and remaining time to interchanges point when switching to another line becomes more difficult in those conditions especially for foreigners who new in a particular region. This study presents the combination of a mental model and a usability approach to construct a user journey map that led to new insights on user's experiences and challenges when utilizing their mobile local transit application. This valuable information is a part of the elicitation process to propose an alternative interaction method to enhance the usability and travel experience of the public transit app. The experimental results indicate that in contrast to the existing mobile transit app, the proposed interface with the utilization of a wearable device could considerably enhance user action when trying to reach the desired location in terms of total time and performance. It implies that the proposed solution, which works through the mental model and user journey is able to intuitively enhance the public transit app usability.

An idea of intuitive mobile diopter calculator for myopia patient Komang Candra Brata; Mukhammad Sharif Hidayatulloh
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 1: February 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i1.11623

The diopter is the unit of measurement for the refractive power of a lens. Myopia is a form of refractive error which is a leading cause of visual disability throughout the world. The prevailing treatment of refractive errors which are commonly used in daily life are glasses and contact lenses. Although those methods can overcome myopia, many myopia patients still don’t really know how to measure their current refractive error in diopter. This condition may retard the progression of refractive treatment in the myopic individual. The common methods to measure refractive error are phoropter with Snellen chart and retinoscopy, but those expensive tools need expertise to operate. This paper presents the concept of measure the face to smartphone screen distance to provide the possibility to implement a mobile application as a low-cost alternative refractive measurement tool. The main objective is to investigate the feasibility of mobile application to help patients with myopia measuring their blur line distances and evaluate their diopter levels independently. The experimental results reveal that, with 80.5 usability score the overall functionality of proposed application can be categorized as usable to users and feasible for future implementation.

Konsistensi Ranking pada Sistem Rekomendasi Resep Masakan dengan Simple Additive Weighting Ratih Kartika Dewi; Komang Candra Brata; Nabila Nabila
Jurnal Nasional Teknik Elektro dan Teknologi Informasi Vol 8 No 3: Agustus 2019
Publisher : Departemen Teknik Elektro dan Teknologi Informasi, Fakultas Teknik, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (952.658 KB)

Along with the development of internet technology, recipes can easily be obtained from various sources, such as websites, mobile applications, and social media. The variety of recipes that available in various media still have one disadvantage: it can not accommodate user preferences. In this kind of problem, the role of a Decision Support System (DSS) is needed by people who actively cook using recipes in daily cooking activities. DSS recommendations for recipes can be built by using Simple Additive Weighting (SAW) algorithm. The variables chosen as criteria for recipe recommendations are duration of cooking, level of complexity, and calories. The ranking consistency test aims to see if there is a ranking reversal (the first ranking is swapped with the latest ranking) when there is a change in the number of recipes (alternatives). The purpose of this research is to find out the reliability of the SAW algorithm in the issue of recipe recommendations. The ranking consistency test result shows consistency of 100% and there is no rank reversal (last recommendation becomes first recommendation) for this case.

An alternative m-learning scoring approach to automatically evaluate Iqro’s pronunciation based on pitch, volume, and rhythm features Komang Candra Brata; Mohamad Handy Nugraha; Adam Hendra Brata
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 5: October 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i5.pp5313-5320

The Iqro’ has been proven as an effective method to improve literacy for reading Hijaiyah letters which are the fundamental skill for reading the Qur’an. The Iqro method relies on a mentor to evaluate the accuracy of the student’s pronunciation of the Hijaiyah letters. With the advancement of mobile technology, many mobile apps are available to assist the learning process. However, the existing solution that is available on the market only provides a one-way learning experience where users only focus on enhancing vocabulary, writing, and reading ability with a simple true-false assessment. Although enhancing the vocabulary and reading ability is important, training the correct Makhraj (Arabic pronunciation) is also essential in fundamental Hijaiyah learning. This paper presents the feasibility investigation of the usage of the pitch, volume, and rhythm as the more comprehensive audio assessment parameters in the voice recognition module to evaluate the student's ability to pronounce the Hijaiyah letter in an m-learning implementation. Instead of just presenting the true-false output, the proposed method will calculate the Makhraj correctness in the range 0 to 100. Experimental results with 10 respondents show that the sample correlation coefficient using Pearson between a manual assessment by Ustaz and the application result for Iqro’ level 1 is 0.51 which means this approach is acceptable for future implementation.

Pelatihan dan Pendampingan Penggunaan Website Program Studi Sebagai Sarana Penyampaian Informasi Akademik Perguruan Tinggi pada Jurusan Teknik Pengairan UB Adam Hendra Brata; Lutfi Fanani; Faizatul Amalia; Komang Candra Brata
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.6425

Jurusan Teknik Pengairan Universitas Brawijaya (UB) merupakan salah satu jurusan yang berada Fakultas Teknik Universitas Brawijaya. Jurusan ini memiliki website dengan alamat www.pengairan.ub.ac.id yang digunakan sebagai media informasi kepada sivitas akademika. Namun, website tersebut tidak menyediakan informasi yang terbaru. Berdasarkan hasil wawancara dengan pihak jurusan, ditemukan permasalahan bahwa para operator memiliki sedikit pengetahuan dan ketidakkemampuan dalam mengelola website jurusan. Oleh karena itu, kegiatan pelatihan dan pendampingan dalam mengelola website menjadi solusi dari permasalahan tersebut. Metode pelatihan yang sesuai dalam kegiatan ini adalah ceramah yang dikombinasikan dengan metode demonstrasi. Kegiatan pelatihan ini dilaksanakan pada 20-22 September 2021 dengan jumlah peserta sebanyak 16 orang. Hasil pelatihan yang telah dilakukan, diperoleh bahwa kegiatan ini dapat meningkatkan pengetahuan dan keterampilan dosen dan tenaga kependidikan Jurusan Pengairan dalam memanfaatkan website jurusan untuk memberikan informasi akademik pada program studi di Jurusan Teknik Pengairan UB.Department of Irrigation Engineering is one of the departments in the Faculty of Engineering, University of Brawijaya. This department has a website with the address www.pengairan.ub.ac.id, a medium of information for academics. However, the website needs to provide updated information. Based on the results of interviews with the department, it was found that the operators needed more knowledge and were unable to manage the department's website. Therefore, training and mentoring activities in managing websites are the solutions to this problem. The appropriate training method for this activity is the lecture combined with the demonstration method. This training activity was held on 20-22 September 2021 with 16 participants. The training results can improve the knowledge and skills of Lecturers and Educational Staff of the Department of Irrigation in utilizing the department's website to provide academic information on study programs in the Department of Irrigation Engineering UB.

Co-Authors Abdul Ghoniy Nur Chasana Abdurrahman Diewa Prakarsa Abyan Setia Asa Putra Achmad Arif Kusamiaji Achmad Arwan Achmad Igaz Falatehan Adam Hendra Brata Ade Armawi Paypas Adena Nioga Admaja Dwi Herlambang Agi Putra Kharisma Agus Purnomo Ruminto Ahmad Afif Supianto Ahmad Afif Supianto Ahmad Afif Supianto Ahmad Wahid Rifa'i Ahmad Wildan Rizaldy Ahmadan Mukhtarif Akbar, Muhammad Aminul Akhmad Rizqi Azhari Albilaga Linggra Pradana Alfin Hidayat Darmawan Alfonsus Avianto Chandrawan Alif Andarta Al Falah Amir Saqib Azhardika Amira Fauzia Rahmah Andri Suranta Ginting Angel Anggina Nasution Annisa Novy Kholiyanti Arka Fadila Yasa Arya Yudha Mahendra Aryo Pinandito Azka Muhammad Hanisa Bayu Reza Gunawan Buce Trias Hanggara Candra , Ersya Nadia Charles Sanggalangi Chavindro Bunga Mardiasto Danang Trisdiana Putra Denny Sagita Rusdianto Deron Liang Dewi, Ratih Kartika Dicky Wahyudi Dinda Hudaifa Djoko Pramono Dwi Yovan Harjananto Eka Iqbal Virgiawan Ekklesioga Kaban Eko Prasetyo Lukman Nur Hakim Erastus Mauliate Erika Ramadhanty Eriq Muh. Adams Jonemaro Fadhil Rizqullah Saniputra Fadhyl Farhan Alghifari Fadhyl Farhan Alghifari Fais Al Huda Faishal Pradipta Astungkoro Faizatul Amalia Fajar Pradana Fara Nur Azizah Fatimah Azzahra Fatkhur Rosyad Fatur Rahnat Ariyan Fatwa Ramdani, Fatwa Felinda Gracia Lubis Ferlie Deanada Effendi Fiaji, Noveria Anggraeni Fiqih Yanfirdaus Afandi Fitrantika Diashafira Fitriyah, Hurriyatul Gema Isya Luthfi Prathama Ghifari Galih Ramadhan Ghozi Akbar Wicaksono Ginanjar Wisnu Ifan Agusti Giri Nugroho Hafidz Aulia Setijadi Hafiz Maulana Hanifah Muslimah Az-Zahra Hanifah Muslimah Az-Zahra, Hanifah Muslimah Harun Christian Bentro Hendrikus Dimas Samara Herman Tolle Hernawan, Zildan Isrezkinurahman Heru Putra Hilman Hamdani Hilyah Nadhirah Ifan A., Ginanjar Wisnu Ignatius Daniel Y.T.A. Ginting Ilham Rachmad Zunaidi Ilmam Achmadiarsyi Imam Safi'i Ingke Ryastratika Milenia Efendi Iqbal Setya Nurfimansyah Ishak Robin Simorangkir Ismail Rabbanii Ismiarta Aknuranda Januari Arka Jemal Rashidi Jeriko Hosea Julanto Jimmy Sohaga Dachi Joang Pratama Achmad Jodie Rizky Hidayat Joel Johanes Cirio Joshua Dika Khoirul Abdul Jamil Kusworo, Muhammad Aziz Linda Shintya Sari Lutfi Fanani Lutfi Fanani Lutfi Fanani M Faizal Putra Pradana M. Ali Fauzi M. Isrofil Dwi Khusnanta M. Syafiul Umam Mahardeka Tri Ananta Mahardeka Tri Ananta, Mahardeka Tri Maharoni Hendra Pradikja Mahendra, Arya Yudha Meita Putri Aidha Mochamad Ilham Irwinansyah Mohamad Handy Nugraha Mohamad Handy Nugraha Mohammad Haikal Hasnain Mohammad Syaifudin Abdullah Muhamad Nabil Rabani Muhammad Abdul 'Alim Muhammad Abyan Safitra Muhammad Afif Fauzi Muhammad Aminul Akbar Muhammad Avied Bachmid Muhammad Enowato Muhammad Hasan Johan Alfarizi Muhammad Ilham Wibowo Muhammad Jauhari Jawara Perkasa Muhammad Lamkhil Bashor Muhammad Lavy Aunil Malik El Harisy Muhammad Naufal Dzikrullah Muhammad Rafsan Adhizar Muhammad Rizqi Rakha Aulia Muhammad Rizqinovniari Muhammad Salman Ramadhan Muhammad Satya Nugraha Muhammad Zaharuddin Mukhammad Sharif Hidayatulloh Mukhammad Sharif Hidayatulloh Nabila Nabila Nabila Nabila Nabila, Nabila Nike Wirahayu Cahyaningsih Niken Hendrakusma Wardani Novrian, Irhamsyah Reva Nugraha, Irvan Rizki Nurizal Dwi Priandani Nurul Hidayat Nyoman Putra Utama Pangayoman, Wishnuadji Surya Prabowo, Muhammad Bintang Prima Zulvarina, Prima Priska Suseta Prita Nur Rizky Faridiani Putra, Ananda Ilyasa Rachmad Soleh Rafiqah Majidah Rahman Rulli Arjiansa Ramadhan, Rigel Vibi Ramadhani Imam Khoiri Randy Indraswara Raras Kirana Amaranggana Rasyid Asis Perdana Ratih Kartika Dewi Retno Indah Rokhmawati Revianda Amrullah Akbar Riekko Rahmat Rahardian Rio Donaroe Munthe Riswan Septriayadi Sianturi Riza Setiawan Robertus Dwi Ari Utomo Robihamanto Robihamanto Rr. Tasia Haniifah Rihadatul Aisy Ryan Sutawijaya Sabil Prihastomo Seputro Sabilatunnajah Sabilatunnajah Safier Yusuf Santi Yunika Sufiana Satrio Hadi Wijoyo Sigit Widodo Silalahi, Reinhard Jonathan Stefanus Anugrah Pribadi Sufiana, Santi Yunika Surbakti, Osvaldo Rios Junior Swastika Akbar Umardani Syahshiyah Rohidah Tegar Yoga Prabawakusuma Tri Afirianto Tri Afirianto, Tri Utomo, Ibnu Najah Barlian Hadi Wahyu Septiadi Wanda Septia Dewi Lestari Welly Dian Astika Wornandes Michel Sinaga Yudha Akbar Pramana Zhafrant, Rifqi Hilmy

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