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All Journal International Journal of Electrical and Computer Engineering Perfecting a Video Game with Game Metrics 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

Komang Candra Brata

Universitas Brawijaya

Author-ID : 243317

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

Published : 163 Documents Claim Missing Document

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Articles

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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.

Usability Evaluation of Mobile-Based Application for Javanese Script Learning Media Ratih Kartika Dewi; Nurizal Dwi Priandani; Komang Candra Brata; Lutfi Fanani
Journal of Information Technology and Computer Science Vol. 3 No. 1: June 2018
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Indonesian people should actively preserve Indonesian culture. A way to preserve Indonesian culture can be done by using Javanese scripts as a local content subject at elementary to middle school level. In the conventional learning method, almost all teachers teach writing Javanese manuscript with conventional instructional media by using a white board. We proposed a mobile application that can help students to learn how to write Javanese script in attractive way by using their finger. Since this application still in prototype stage, further study and analysis of the usability of this application are necessary to validate the feasibility in real implementation. Usability testing using USE questionnaire had been conducted to find out if application of Javanese script writing can be accepted by users. We give 30 questions about usability to 5 respondents that are familiar with android application. The result show that, the proposed application is acceptable to users in term of Usefulness, ease of use, ease of learning and satisfaction.

Comparison between SAW and Knowledge based SAW in Recipe Recommendation System Ratih Kartika Dewi; Komang Candra Brata; Tri Afirianto; Ersya Nadia Candra
Journal of Information Technology and Computer Science Vol. 6 No. 3: December 2021
Publisher : Faculty of Computer Science (FILKOM) Brawijaya University

Recipes are used as a reference in processing cooking ingredients to meet personal nutritional needs, considering the ingredients used to make food sold freely that is not necessarily guaranteed in nutritional quality and safe to consume, especially during the pandemic as it is today. So cooking itself becomes a better alternative for the community. With a large number of food recipe options available for various media, the role of a Decision Support System is needed by people who will get food recipe recommendations. Research related to recipe recommendations that have been done are using SAW only and some add experts as a source of knowledge to provide value on the variable time and complexity of cooking recipes. Therefore, in this study, a comparison between the research of recipe recommendations with SAW only and research that added a subsystem of knowledge management derived from experts to support the decision support system of food recipe recommendations was conducted by using correlation testing. The results is there is a strong correlation between knowledge based SAW and user preference to the value of 0.9774. The result is better than SAW only and user preference with the value of 0.7262.

Pembangunan Aplikasi Manajemen Penyiraman Rumput Taman Playground Berbasis Internet of Things Komang Candra Brata; Ginanjar Wisnu Ifan A.; Adam Hendra Brata
Jurnal Teknologi Informasi dan Ilmu Komputer Vol 8, No 2: April 2021
Publisher : Fakultas Ilmu Komputer, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25126/jtiik.2021824399

BUMDESMA Kecamatan Ngantang adalah Badan Usaha Milik Desa Bersama yang ada di Kecamatan Ngantang. Instansi ini adalah instansi baru yang memiliki usaha berupa playground. Dari awal pembukaan playground hingga terakhir yaitu bulan Juli 2019 pemasukan playground mengalami penurunan dikarenakan rusaknya rumput taman selama musim kemarau. Permasalahan yang dialami BUMDESMA adalah pemeliharaan rumput gajah mini untuk taman memerlukan metode penyiraman khusus namun BUMDESMA belum mampu menggunakan jasa penyiraman untuk menyiram taman playground. Dari permasalahan tersebut maka dikembangkan sistem penyiraman taman berbasis Internet of Things (IOT) untuk menekan biaya pengeluaran BUMDESMA. Sistem manajemen penyiraman taman menggunakan aplikasi yang ditanamkan pada perangkat Android untuk mengontrol sistem yang dibuat dan perangkat embedded untuk melakukan mekanisme penyiraman. Hasil pengujian blackbox menunjukan bahwa hasil uji 100% valid. Pengujian usability menunjukan nilai lebih dari kriteria minimum penelitian dengan nilai 72 yang berarti bahwa aplikasi dapat diterima oleh pengguna. Dari hasil pengujian efisiensi biaya menunjukan bahwa penggunaan sistem penyiraman dalam jangka panjang dapat mengurangi biaya pengeluaranan BUMDESMA dibanding penggunaan jasa penyiraman profesional. AbstractBUMDESMA Kecamatan Ngantang is a Joint Village-Owned Enterprises located in Ngantang District, Malang, East Java. This is a new agency that has a playground as one of the core businesses. Along from the beginning of the playground operates until the end of July 2019, playground revenue has gradually decreased. This issue arises due to the bad condition of the grass on the playground causing local people are not willing to visit that place. The playground's grass requires special watering treatment but BUMDESMA is the lack of income so they cannot afford to pay the professional grass maintenance services to actively watering the playground grass. From these problems, We proposed an IOT based garden watering system to reduce BUMDESMA expenditure costs. The garden watering management system uses a mobile application as a user interface to control the system and embedded devices for the watering mechanism. Blackbox testing of the proposed system shows that all the functional requirements are 100% valid. Usability testing shows a value of 72 which is more than the minimum threshold of usability criterion means that the application is acceptable to users. The results of cost-efficiency testing show that the proposed water systems can reduce the cost when compared to using professional watering services.

Co-Authors Abdul Ghoniy Nur Chasana Abdurrahman Diewa Prakarsa Abyan Setia Asa Putra Achmad Arif Kusamiaji Achmad Arwan Achmad Igaz Falatehan Adam Hendra Brata Adam Hendra Brata Adam Hendra Brata Adam Hendra Brata Adam Hendra Brata Ade Armawi Paypas Adena Nioga Admaja Dwi Herlambang Agi Putra Kharisma Agus Purnomo Ruminto Ahmad Afif Supianto Ahmad Afif Supianto Ahmad Wahid Rifa'i Ahmad Wildan Rizaldy Ahmadan Mukhtarif 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 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 Ersya Nadia Candra Fadhil Rizqullah Saniputra 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 Fiqih Yanfirdaus Afandi Fitrantika Diashafira Gema Isya Luthfi Prathama Ghifari Galih Ramadhan Ghozi Akbar Wicaksono Ginanjar Wisnu Ifan A. Ginanjar Wisnu Ifan Agusti Giri Nugroho Hafidz Aulia Setijadi Hafiz Maulana Hanifah Muslimah Az-zahra Hanifah Muslimah Az-Zahra Harun Christian Bentro Hendrikus Dimas Samara Herman Tolle Heru Putra Hilman Hamdani Hilyah Nadhirah Hurriyatul Fitriyah Ignatius Daniel Y.T.A. Ginting Ilham Rachmad Zunaidi Ilmam Achmadiarsyi Imam Safi'i Ingke Ryastratika Milenia Efendi Iqbal Setya Nurfimansyah Irhamsyah Reva Novrian 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 Linda Shintya Sari Lutfi Fanani 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 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 Aziz Kusworo Muhammad Bintang Prabowo 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 Noveria Anggraeni Fiaji Nurizal Dwi Priandani Nurizal Dwi Priandani Nurul Hidayat Nyoman Putra Utama Osvaldo Rios Junior Surbakti Priska Suseta Prita Nur Rizky Faridiani Rachmad Soleh Rafiqah Majidah Rahman Rulli Arjiansa Ramadhani Imam Khoiri Randy Indraswara Raras Kirana Amaranggana Rasyid Asis Perdana Ratih Kartika Dewi Ratih Kartika Dewi Ratih Kartika Dewi Reinhard Jonathan Silalahi 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 Santi Yunika Sufiana Satrio Hadi Wijoyo Sigit Widodo Stefanus Anugrah Pribadi Swastika Akbar Umardani Syahshiyah Rohidah Tegar Yoga Prabawakusuma Tri Afirianto Tri Afirianto Wahyu Septiadi Wanda Septia Dewi Lestari Welly Dian Astika Wishnuadji Surya Pangayoman Wornandes Michel Sinaga Yudha Akbar Pramana Zildan Isrezkinurahman Hernawan Zulvarina, Prima

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