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All Journal MANAJEMEN IKM: Jurnal Manajemen Pengembangan Industri Kecil Menengah Jurnal Informatika Jurnal Algoritma Neo-Bis Jurnal Ilmiah KOMPUTASI RABIT: Jurnal Teknologi dan Sistem Informasi Univrab ILKOM Jurnal Ilmiah SISFO Jurnal RESISTOR (Rekayasa Sistem Komputer) Jurnal Ilmiah Media Sisfo Jurnal Nasional Pendidikan Teknik Informatika (JANAPATI) Jurnal Teknologi Sistem Informasi Jurnal Ilmiah Sistem Informasi dan Teknik Informatika (JISTI) Kharisma Tech Jurnal Algoritma Journal of Technology Research in Information System and Engineering
Mohammad Fajar, Mohammad
STMIK Kharisma Makassar
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Desain Over the Air Programming pada Jaringan Sensor Nirkabel Berbasis Platform Arduino Fajar, Mohammad
JTRISTE Vol 11 No 2 (2024): JTRISTE
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/jtriste.v11i2.551

Abstract

The purpose of this research is to design over the air programming mechanism for a node in wireless sensor network. Data are gathered from experiments of the proposed system on a constrainted environment. On this design, the Arduino that becomes the target of reprogramming has it’s bootloader modified to enable the capability to run embedded program from the SD Card. Arduino’s source code .ino file is compiled into a .hex file using the Arduino IDE. Then, it is processed using avrdude application into a ready to run firmware binary file on Arduino. A desktop application is made for this mechanism in order to control sender XBee device in transmitting data packet by packet. If the transmission was successful, the node will restart itself, and trigger the bootloader to load new program from the SD Card. The system is evaluated through preset scenarios which including testing at various distances and environments (indoor and outdoor). It was concluded that the reprogramming mechanism was uneffective in transmitting source code when at least one of the XBee devices is located inside the building which affected the transmission process. For the second testing scenario, both nodes were located outdoors with testing distance up to 15 metres, resulting with average transmission speed of 35 bytes per second for sent packet size of 60 bytes. The safest sent packet size to avoid packet loss while transmitting should not exceed 30 bytes for transmission distance up to 15 metres. Transmission speed across all test scenarios ranges between 14 bytes per second to 35 bytes per second. For indoor testing, the evaluation results showed that the designed OTAP mechanism in this study is not yet effective. This is assumed to be influenced by the transmission capability of the XBee communication module.
Strategi Peningkatan Kinerja Bisnis Usaha Mikro Kecil Menengah (Studi Pada UMKM Makanan Dan Minuman Nasabah KUR Bank Syariah Indonesia Area Bandung Kota) Syarief, Rizal; Yusri, Doni; Fajar, Mohammad
MANAJEMEN IKM: Jurnal Manajemen Pengembangan Industri Kecil Menengah Vol. 20 No. 1 (2025): Manajemen IKM
Publisher : Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/mikm.20.1.25-33

Abstract

Bank Syariah Indonesia as one of the state-owned banks has an interest in the success of the people's business credit (KUR) financing program launched by the government. The objectives of this study are: (1) to analyse the effect of financial literacy on the business performance of food and beverage (F&B) SMEs; (2) to analyse the effect of financial inclusion on the business performance of F&B SMEs; (3) to analyse the effect of entrepreneurial orientation on the business performance of F&B SMEs; (4) to analyse the effect of social media marketing capability on the business performance of F&B SMEs: (4) analyse the effect of social media marketing capability on business performance of mamin SMEs; and (5) formulate strategies to improve business performance of F&B SMEs. Data collection using the slovin method, where the sample size was set at 283 respondents. Research with descriptive and inferential statistical methods using multiple linear regression analysis, which consists of validity test, reliability, t test, F test. Strategy formulation using internal-external environmental analysis with IFE and EFE matrix, position mapping and alternative strategies with IE and SWOT matrixs, then determine strategy priorities with QSP matrix. The results of the analysis show that food and beverage SMEs are in quadrant I (grow and build). Based on the results of quantitative analysis on the QSP matrix, the strategy that can be implemented is assistance in preparing financial reports of SMEs to maintain financial stability.
Perancangan Sistem Keamanan Lingkungan Berbasis Short Message Service Menggunakan Platform Arduino Huda, Andi M. Nurul; Fajar, Mohammad; Munir, Abdul
JTRISTE Vol 11 No 2 (2024): JTRISTE
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This study aims to create an Short Message Service (SMS) based security system using the Arduino platform, where the system can be applied to every corner of the village in Indonesia. The system functions to play the sound of the danger signal whether it is theft or fire. The method used to remotely or or control the system is to use the Short Message Service (SMS) Tracking method, namely by sending an SMS command to play the sound of an alarm (Mp3). The system can run well such as receiving sms and processing the contents of the sms to play mp3 files, although there is still a little delay in receiving sms and playing the mp3.
PERANCANGAN PROTOTYPE HAND GLOVE BERBASIS ARDUINO SEBAGAI ALAT BANTU IDENTIFIKASI OBJEK BAGI PENYANDANG TUNANETRA Sun, Enrique Justine; Fajar, Mohammad; Munir, Abdul
KHARISMA Tech Vol 20 No 1 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i1.566

Abstract

Blind individuals face obstacles in identifying objects or things around them, so a tool is needed that can help overcome these obstacles. This study aims to design an Arduino-based Hand Glove prototype that can help blind people identify objects around them. Research data collection was carried out through literature studies and testing of the designed prototype. The system is designed to consist of two large parts, the first part is the hand glove used by blind individuals, consisting of Arduino, RFID reader and speaker. The second part consists of objects to be identified that have been given an identity label in the form of a RIFD Tag. The evaluation results show that the design prototype can read and identify objects such as chairs, tables, laptops, cellphones and PCs which are distinguished from the sound variations that have been set and defined using a buzzer as a notification tool.
POLA DESAIN MODEL-VIEW-VIEW MODEL UNTUK PENGEMBANGAN APLIKASI CALORIE COUNTER YANG EFISIEN Fajar, Mohammad; Hijaya, Daniel Alexander; Hasniati
JTRISTE Vol 12 No 1 (2025): JTRISTE
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/jtriste.v12i1.573

Abstract

This study aims to design an efficient calorie counter application using Model-View-ViewModel (MVVM). The use of the Model-View-ViewModel design pattern is based on efforts to facilitate the process of reusing source code (Reusability). The design process uses flutter as an application framework. This research can be used as a reference regarding the Model-View-ViewModel, as well as providing new knowledge for researchers regarding the combination of the Model-View-ViewModel design pattern with the flutter framework on the android platform. Data collection in this study was carried out through literature studies and evaluation of the system design. The application was developed using the Dart programming language, while the evaluation of the implementation of MVVM design pattern is measured by using CK metrics. The evaluation shows that the MVVM calorie counter application can be run on Bluestacks Android Emulator successfully. The reusability degree of the application is better than the non-MVVM calorie counter apps, where the WMC parameter decreased by 4.5 points, and the DIT parameter by 0.3 points, while the CBO parameter decreased by 0.4 points, and the LCOM parameter by 31.2 points. The results indicate that the MVVM calorie counter application is easier to maintain.
IMPLEMENTASI FINITE STATE MACHINE UNTUK MENGATUR ALUR NARASI GAME VISUAL NOVEL MYSTIC PAGES Yason, Clarissa; Fajar, Mohammad; Zaman, Baizul
KHARISMA Tech Vol 20 No 2 (2025): KHARISMATech Journal
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v20i2.607

Abstract

Visual novels are a genre of video games that emphasized the delivery of interactive narratives, where players engaged with the storyline through a series of choices that influenced its direction and outcomes. In the development of Mystic Pages, a mystery-themed visual novel, challenges were encountered in managing branching storylines. Conventional methods such as if-else structures and flag systems were found to be inefficient and prone to logical errors when applied to large-scale scenarios. Therefore, this study aimed to implement a Finite State Machine (FSM) as a solution to manage dynamic and structured narrative flows. The storyline was represented as states within an FSM diagram, starting from the “start dialog” state to the “dialog pack end 5” state, with narrative progression determined by player choices. The results demonstrated that the documentation and visualization of Mystic Pages’ branching storylines using FSM facilitated modifications, as developers only needed to add new states and transitions without disrupting existing logic. Furthermore, black-box testing confirmed that all transitions between states operated correctly, with no issues such as dead ends or infinite loops. All branches executed as designed, achieving a 100% success rate.
Implementasi Algoritma Advanced Encryption Standard untuk Pengamanan Data Pengguna Aplikasi Media Sosial VirCle Fajar, Mohammad; Kambodji, Audri Billy; Musdar, Izmy Alwiah
Jurnal Algoritma Vol 20 No 2 (2023): Jurnal Algoritma
Publisher : Institut Teknologi Garut

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33364/algoritma/v.20-2.1466

Abstract

VirCle is a mobile-based social media application that was developed as a medium for communication and interaction between fellow users. Application user data is stored in the Firebase database, without any additional security mechanisms. Even though Firebase provides security services when data is transmitted as well as access management mechanisms, because Firebase is a back-end database service, where the accessing application and the data are on a separate layer, the stored VirCle user data can still be accessed, either by other external applications through programming interfaces, or users with specific roles in the system such as administrators. On the other hand, the existence of stored user data is very important and must always be kept confidential by VirCle application service developers and service managers. Therefore, this research aims to implement the Advanced Encryption Standard (AES) algorithm for encrypting VirCle application user data so that it has an additional layer of security. The encryption design uses the AES-128bit algorithm considering the speed of the encryption and decryption process which is relatively faster than other symmetric cryptographic algorithms. The AES implementation in this study uses the Kotlin language by utilizing the BouncyCastle 128-bit AES library and CBC operating mode and PKCS5 padding to assist the encryption and decryption process. The evaluation results show that the developed VirCle application can encrypt user data (plaintext) into coded data (ciphertext) which is then stored in the Firebase database, then successfully reads and decrypts the stored ciphertext data from the database for reuse. Evaluation of application performance from the speed aspect shows that the encryption and decryption process time for user data is quite fast with an average total time of 1.35 milliseconds for the encryption process, and 1.53 milliseconds for the decryption process. Apart from that, evaluating the Avalanche Effect (AE) from the results of the AES-128 bit encryption algorithm used, an average percentage of 50.36% was obtained, this shows that the level of data randomness is considered good.
DYNAMIC MANET ON DEMAND PROTOCOL PADA JARINGAN SENSOR NIRKABEL UNTUK SISTEM MONITORING LAHAN PERTANIAN Halid, Agus; Takumansang, Leonardo O. J; Fajar, Mohammad
ILKOM Jurnal Ilmiah Vol 9, No 2 (2017)
Publisher : Prodi Teknik Informatika FIK Universitas Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33096/ilkom.v9i2.138.211-217

Abstract

Penelitian ini bertujuan untuk menerapkan dan mengevaluasi protokol Dynamic Mobile Ad-Hoc Network (DYMO) pada sistem monitoring lahan pertanian berbasis jaringan sensor nirkabel. Rancangan jaringan terdiri dari node sensor yang ditempatkan secara statik di lahan pertanian dan node router serta gateway sebagai node bergerak yang dibawa oleh petani/mobil pertanian. Hasil evaluasi menunjukkan bahwa protokol DYMO dapat digunakan pada jaringan sensor nirkabel untuk sistem monitoring lahan pertanian. Evaluasi rancangan dan skenario di atas lingkungan simulasi OPNET memperlihatkan kinerja jaringan menggunakan protokol DYMO dapat diterima. Salah satu pengujian memperlihatkan rata-rata delay pengiriman dan penerimaan data sebesar 10,812506/ms, minimal waktu delay end-to-end pengiriman dan penerimaan node sebesar 19,105028/ms, maksimal sebesar 19,643988/ms, dan rata-rata pengiriman dan penerimaan delay end-to-end yaitu 19,377766/ms, nilai rata-rata throughput sebesar 46.651 bits/sec. Selain itu, evaluasi awal prototip node sensor berbasis XBee pada jarak 120 meter menunjukkan kinerja jaringan seperti kehilangan paket (packet loss) dan kekuatan sinyal yang dapat diterima.
Pemrosesan Query Pada Sistem Monitoring Lingkungan Berbasis Jaringan Sensor Nirkabel Gunawan Halim; Mohammad Fajar; Abdul Munir
Jurnal Ilmiah Sistem Informasi dan Teknik Informatika (JISTI) Vol 9 No 1 (2026): Jurnal Ilmiah Sistem Informasi dan Teknik Informatika (JISTI)
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat Universitas Lamappapoleonro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.57093/jisti.v9i1.380

Abstract

In wireless sensor network (WSN) and Internet of Things (IoT) systems, inter-node communication is predominantly unidirectional, in which sensor nodes transmit data to a central collection node. Nevertheless, certain scenarios necessitate bidirectional communication, enabling users to request specific data from distributed nodes without reliance on scheduled transmissions. The objective of this study is to develop a data query processing mechanism suitable for environmental monitoring systems based on WSN and IoT architectures. Arduino microcontrollers and the nRF24L01 communication module were utilized as a cost-effective and reliable prototyping platform, with eleven distinct query types designed to facilitate user interaction. Field experiments conducted in an agricultural setting revealed that the query processing system achieved a satisfactory accuracy rate at a sensor-to-base-station distance of 30 meters—specifically, 4 out of 50 transmitted queries failed, resulting in an accuracy of 92%. At a distance of 60 meters, an accuracy rate of 80% was deemed acceptable. Moreover, a numerical simulation model indicated that distances of up to 70 meters constitute the optimal operational range, affording both robust communication accuracy and enhanced energy efficiency. Distances exceeding 70 meters necessitate supplementary strategies, such as the deployment of repeater nodes.
ANALISIS DAN DESAIN SISTEM PENJUALAN KONSINYASI MENGGUNAKAN PENDEKATAN BERORIENTASI OBJEK LIGHTWEIGHT RATIONAL UNIFIED PROCESS: ANALYSIS AND DESIGN OF CONSIGNMENT SALES SYSTEM USING AN OBJECT ORIENTED LIGHTWEIGHT RATIONAL UNIFIED PROCESS APPROACH Mohammad Fajar; Richla Rahmatika; Afifah Afifah
Rabit : Jurnal Teknologi dan Sistem Informasi Univrab Vol 9 No 2 (2024): Juli
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/rabit.v9i2.4735

Abstract

The aim of this study is to apply Lightweight Rational Unified Process (RUP) approach in modeling consignment sales information systems. Data collection is performed through literature studies, interviews and evaluation of modeling results systems. The application of the Lightweight RUP method in this research is carried out by following each stage of the approach, starting from requirements stage, analysis stage, then design stage, and the implementation stage where the connection between one stage and another can be maintained through the artifacts produced. In the requirements stage, usecase is made based on the requirements table which contains system features based on literature studies related to sales information systems and through interviews of the potential users. Furthermore, the usecase is the basis for making a number of diagrams at the analysis stage, namely activity diagrams and sequence diagrams. At the design stage, platform selection needs to be done first, so that the class diagram that will be designed to adjust to the platform chosen. In addition, at the final stage of the design, the author adds the evaluation process to the completeness of the class diagram before translated them into program code. Evaluation at the final stage of the design shows that the created class diagram has fulfilled all aspects of completeness so that it is possible to be mapped to the final target platform selected, namely the Java programming language. While the evaluation of generated program code on the Java platform shows that the cashier will able to use the desktop application to make sales transactions. As for the Android platform-based application can be used by the consignor to see the information on the status of the sold items (cakes).
Co-Authors A.A. Ketut Agung Cahyawan W Abdul Munir Abdul Munir Abdul Munir S. Afifah Afifah Afifah Agus Halid Agus Halid, Agus Anthony Arfan Yunus Arianti Caroline Layadi Ciuandi, Fudianto Dian Yustika Doni Yusri Elisya Belia Maria Engka Erwina Farel Chrisber KawiIarang Farid Wikarsa Felycia Wisanto Ferian Bagus Chandra Gabryella Angelina Ho Gunawan Halim Hamdan Arfandy Hasniati Hasniati Hasniati, Hasniati Hendra Surasa Hijaya, Daniel Alexander Hong William Fondy Huda, Andi M. Nurul Imin, Jonathan Hansen Inri Christiana Winardy izmy alwiah musdar Jason Pratama Sunarji Junaedy Kambodji, Audri Billy Kelvin Aurin Kevin Suharto Lauw Reduardy I. Laulyta, Lauw Reduardy I. Layadi, Caroline Lukman, Musfirah Putri m Panjiwinata, Sampurna Pratiwy aggraeny puspita sari Riany, Jane Richard Mpila Richla Rahmatika Rizal Syarief Ronny Jubhari Phie Joarno Sadik, Jakfar Santriawan, Bondan Sun, Enrique Justine Suryanto, Christian Rayhan Syaiful Rahman Syaiful Rahman Syamsul Bahri Takumansang, Leonardo O. J Takumansang, Leonardo O. J Wikarsa , Rex Roald Yason, Clarissa Yovita A. Maria Zahir Zainuddin Zulfajri B. Hasanuddin