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All Journal PIKSEL : Penelitian Ilmu Komputer Sistem Embedded and Logic Sinkron : Jurnal dan Penelitian Teknik Informatika ILKOM Jurnal Ilmiah J-SAKTI (Jurnal Sains Komputer dan Informatika) Jurnal Teknologi Informatika dan Komputer Journal of Computer Networks, Architecture and High Performance Computing RESOLUSI : REKAYASA TEKNIK INFORMATIKA DAN INFORMASI Jurnal Abdimas ADPI Sosial Dan Humaniora J-SAKTI (Jurnal Sains Komputer dan Informatika) JUSTIN (Jurnal Sistem dan Teknologi Informasi) Innovative: Journal Of Social Science Research RISTEC : Research in Information Systems and Technology
Defriani, Meriska
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Arts Humanities Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Law, Crime, Criminology & Criminal Justice Public Health Other

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IMPLEMENTATION OF HAVERSINE FORMULA IN AN ANDROID-BASED GEOGRAPHIC INFORMATION SYSTEM BPJS HEALTH FACILITIES IN PURWAKARTA Irgiyansyah; Nugroho, Imam Ma’ruf; Defriani, Meriska
RISTEC : Research in Information Systems and Technology Vol. 6 No. 1 (2025): RISTEC: Research in Information Systems and Technology
Publisher : RISTEC : Research in Information Systems and Technology

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Abstract

This study designs and develops an Application Android-based Geographic Information System (GIS) to assist residents of Purwakarta Regency in locating the nearest BPJS-affiliated healthcare facilities, addressing the limitations of distance information and mapping on the Health Office’s website. To compute distances, the application utilizes the Haversine Formula based on the user’s coordinates. It is developed using Flutter for the Android application and Laravel for the web-based admin system, following the Extreme Programming (XP) methodology. Blackbox Testing is used to ensure system functionality. As a result, the application can display a list and geographic locations of healthcare facilities along with the distance from the user. The application is expected to provide easier access to healthcare information and enhance the quality of health services in Purwakarta Regency.
Design And Develop A Mobile-Based Tour Guide Application In Purwakarta City Nuraprian, Nina; Defriani, Meriska; Singasatia, Dayan
RISTEC : Research in Information Systems and Technology Vol. 2 No. 2 (2021): JURNAL RISTEC : Research in Information Systems and Technology
Publisher : RISTEC : Research in Information Systems and Technology

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Abstract Puwrakarta City is one the regencies in West Java that is currently developing. Purwakarta city is located in a geographical area thatis rich in natural attraction, culinary tourism, and cultural tourism so that the city of Purwakarta become a tourist attractio, but not all tourist attractions in the city of purwakarta are know by local tourists and tourists outside the srea who want to visit and the lack of information anda there are many remote areas which are very unfortunate to miss its tourist attraction. Therefore, a mobile-based tourism application was made to make it easier for tourists to find tours. This software development uses the waterfall method to the dev stage, software modeling uses the Unified modeling Language (UML) modeling which consists of 4 stage, namely use case diagrams, activity diagrams, sequence diagrams, and class diagrams, with programming language using Dart, Firebase database, and using Flutter. This research produces a mobile-based application that has information about natural tourism, culinary tourism, and cultural tourism to that it can be used to disseminate between locak tourists and tourists outside the area in Purwakarta City.
User Interface and User Experience Design of Sales Application Mobile Using User Method Centered Design On CV. MK Sejahtera Restu Djunaedi, Rifqi; Defriani, Meriska; Rafi Muttaqien, Muhammad
RISTEC : Research in Information Systems and Technology Vol. 3 No. 1 (2022): JURNAL RISTEC : Research in Information Systems and Technology
Publisher : RISTEC : Research in Information Systems and Technology

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Applications are software that are often found in everyday life in this digital era, especially mobile-based applications because mobile devices are almost owned and accessed by various groups at any time. The thing that needs to be considered in a mobile application is the appearance of the user interface or interface because it becomes a bridge between the user and the system used. The design of this interface is designed using the user centered design method in which there are 4 steps in the stages, namely specify the context of use, specify user and organizational requirements, produce design solutions and evaluate design. This application prototype design was designed using the figma application with features such as chat, item search, favorites, order tracking and baskets, as well as for testing 30 respondents using the use questionnaire method with calculations using a Likert scale. with the results of the usability value reaching 82.7%, it shows that the MK Mobile application is very suitable for use by customers to be used as a means of transactions on CV MK Sejahtera.
Mobile Based Parking Application Using Extreme Programming (Xp) Method Alfar Budistia, Mochammad; Defriani, Meriska; Jaelani, Irsan
RISTEC : Research in Information Systems and Technology Vol. 4 No. 1 (2023): JURNAL RISTEC : Research in Information Systems and Technology
Publisher : RISTEC : Research in Information Systems and Technology

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Abstract

Vehicle care is one of the businesses that is quite profitable with quite large capital. However, with this capital it becomes a fairly large and long-term income, and fromthis capital every year the price of this capital will definitely increase because of the area of theland. However, in business, there is a problem that often occurs in each of these safekeeping, namely realtime accounting and data in photos and numbers. Then this research aims to make itcivil in managing the daycare. The model and method used uses Extreme Programming (XP) development and, why did I take mobile programming because in this case study it is better for device users who are indeed flexible. The feasibility of this system is seen from the point of view of its functionality and according to the user from what is needed according to the case study. The programming language used is Java, and testing is to display the success of system functionality using ablack box, then for modeling using the unified model language (UML) for flow using this system, the database used is firebase. The purpose of this research is to get a solution to the problems that exist in the place, namely in data collection and reporting to the owner by providing input within certain hours and then conveying it to the owner, with this application providing solutions to problems that occur at this research location.
Android Based Tani Rahayu Application Uses Extreme Programming (Xp) Method Aidi, Bagus; Defriani, Meriska; Jaelani, Irsan
RISTEC : Research in Information Systems and Technology Vol. 4 No. 1 (2023): JURNAL RISTEC : Research in Information Systems and Technology
Publisher : RISTEC : Research in Information Systems and Technology

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Abstract

As many smartphone users with the Android operating system in this digital era applications become one of the tools that can help users in various ways, one of which is to buy necessities, this can be used in companies that usually sell their products in stores that often need effort for consumers to get products. CV. Cipta Rahayu is a company enga ged in the sa le of agricultura l materia ls, the manual sales process often causes problems such as in processing transa ction data, and it takes a long time to make reports, and at least customers because customers have to come directly to the location to order goods, after that it is processed and delivered to the customer's location, this will be difficult for customers whose position is far from the CV location, Often customers also choose to buy goods in the nea rest pla ce at a much more expensive price. Therefore, the company needs a mobile application sales system with the name Tani Rahayu application that can facilitate the sales process. The purpose of this research is to design and build an Android-Based Rahayu Fa rmer Application Using the Extreme Programming (XP) Method. The result of this study is the creation of the Android-ba sed Tani Rahayu application, which will make it easier for customers to order goods without having to go to stores that take distance and time, then solve problems with shop owners or CVs in the process of customer orders and bookkeeping, then overcome customers switching to purchasing agricultura l materia ls at other stores due to the remote location of the store, and attra ct many more other customers.
Penerapan Metode Prototype Dalam Rancang Bangun Aplikasi Koperasi Berbasis Android Di Koperasi Usaha Warga Pupuk Kujang Cikampek Aziz, Muhammad Gofarul; Defriani, Meriska; Minarto , Minarto
Innovative: Journal Of Social Science Research Vol. 4 No. 4 (2024): Innovative: Journal Of Social Science Research
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/innovative.v4i4.13690

Abstract

Percepatan perputaran informasi terus meningkat di era digital ini, menjadikan informasi kebutuhan utama bagi manusia. Smartphone menjadi alat utama dalam menunjang perputaran informasi ini, sehingga perkembangan teknologi untuk mengolah data secara optimal menjadi penting. Penelitian ini berfokus pada penerapan metode prototype dalam rancang bangun aplikasi koperasi berbasis Android di Koperasi Usaha Warga Pupuk Kujang Cikampek dengan tujuan meningkatkan keamanan dan kemudahan penyebaran informasi keuangan bagi anggota koperasi, menggantikan sistem aplikasi chat yang dianggap kurang optimal. Metode prototype dipilih karena memungkinkan umpan balik terus-menerus dari pengguna selama proses pengembangan, sehingga aplikasi dapat disesuaikan dengan kebutuhan mereka. Aplikasi ini dikembangkan menggunakan bahasa pemrograman Kotlin, database MySQL, dan framework Express JS. Hasil penelitian menunjukkan bahwa penerapan metode prototype dalam rancang bangun aplikasi koperasi berbasis Android ini berhasil meningkatkan keamanan dalam penyebaran informasi keuangan, memudahkan akses informasi, serta mengoptimalkan pengolahan data keuangan anggota koperasi
Klasifikasi Penyakit Daun Tanaman Jambu Mete Menggunakan Metode Convolutional Neural Network Ramadhan, Ammar Umran Fauzi; Nugroho, Imam Maruf; Defriani, Meriska
JUSTIN (Jurnal Sistem dan Teknologi Informasi) Vol 14, No 1 (2026)
Publisher : Jurusan Informatika Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26418/justin.v14i1.95718

Abstract

Tanaman jambu mete memiliki nilai ekonomi yang tinggi di Indonesia, namun rentan terhadap berbagai penyakit daun seperti anthracnose, leaf miner, dan red rust yang dapat menurunkan produktivitas panen. Penelitian ini bertujuan untuk mengembangkan sistem klasifikasi penyakit daun jambu mete berbasis citra digital dengan menggunakan metode Convolutional Neural Network (CNN) berarsitektur ResNet50. Dataset diperoleh dari sumber daring dan diproses melalui tahap augmentasi serta normalisasi guna meningkatkan keragaman citra. Model CNN yang dikembangkan berhasil mencapai akurasi pengujian sebesar 91,73%. Sistem ini kemudian diimplementasikan dalam aplikasi web berbasis Streamlit sehingga dapat dimanfaatkan secara langsung oleh petani untuk mendiagnosis kondisi daun secara real-time. Hasil penelitian menunjukkan bahwa penerapan CNN efektif dalam deteksi dini penyakit daun jambu mete dan berpotensi mendukung peningkatan efisiensi diagnosis penyakit berbasis citra di sektor pertanian.
Co-Authors Aidi, Bagus Alfar Budistia, Mochammad Arafat, Doni Azhar, Sarah Afifah Aziz, Muhammad Gofarul Dayan Singasatia Dede Irmayanti Dewi, Berliana Kemala Gito, Mochzen Hermanto, Teguh Hermanto, Teguh Iman Irgiyansyah Irsan Jaelani Ismi Kaniawulan, Ismi Jaelani, Irsan Krishnavarty, Ayumas Aura Lintang Nuril Islami Maulana, Mohamad Firman Minarto , Minarto Muhyidin, Yusuf Muttaqin, Muhammad Rafi Nugroho, Imam Maruf Nugroho, Imam Ma’ruf Nuraprian, Nina Nurul Hasanah Permana, Okta Amien Prayoga, Satrio Mukti Rafi Muttaqien, Muhammad Ramadhan, Ammar Umran Fauzi Resmi, Mochzen Gito Restu Djunaedi, Rifqi Rivaldy, Noval Sari, Anita Wulan Sri Andar Muni, Lise Sunandar, M. Agus Sunandar, Muhamad Agus Syariful Alam Teguh Iman Hermanto Wibawa Pratama, Ariya Wibisono, Muhammad Ridwan Yulianti, Dessy