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All Journal Jurnal Online Mahasiswa (JOM) Bidang Ilmu Ekonomi Kharisma Tech Jurnal Algoritma
Mohammad Fajar
Unknown Affiliation
Computer Science & IT Economics, Econometrics & Finance Engineering

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PENGARUH PROFITABILITAS, LEVERAGE, DAN CORPORATE GOVERNANCE TERHADAP TAX AVOIDANCE (Studi Empiris Pada Perusahaan Manufaktur Yang Terdaftar Di Bursa Efek Indonesia Periode 2012-2014) Mohammad Fajar; Zulbahridar Zulbahridar; Pipin Kurnia
Jurnal Online Mahasiswa (JOM) Bidang Ilmu Ekonomi Vol 1, No 1 (2018): Wisuda Februari 2018
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Ilmu Ekonomi

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

Abstract

The aim of this study was to examine the effect of Profitability, Leverage, and Corporate Governance to Tax Avoidance in Manufacturing Company Listed in Indonesia Stock Exchange Period 2012-2014. The population are all LQ45 companies in Indonesia still operation during the years 2012-2014. Based on specified criteria, the company earned 68 were used as samples in this study. Sample selection by using purposive sampling method. This study uses secondary data such as financial statements and methods of data analysis using multiple linear regression analysis. The conclusions is: Profitability and Leverage effect on Tax Avoidance. The Institutional Ownership, the proportion of independent commissioners’ board, and Audit Committe do not effect on the Tax Avoidance.Keywords : Profitability, Leverage, Corporate Governance and Tax Avoidance
ANALISIS DAN DESAIN KEMBALI UI GAME SMARTEST BRAIN MENGGUNAKAN METODE DESIGN THINKING Anita Carolina Willyan; Mohammad Fajar; Baizul Zaman
KHARISMA Tech Vol 17 No 2 (2022): Jurnal KHARISMATech
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v17i2.231

Abstract

This research aims to analyze and redesign the user interface of the educational game The Smartest Brain using the design thinking method in order to produce a user interface that increases children's interest in learning. Data was collected by distributing questionnaires to 20 respondents and processing data using the System Usability Scale method. Design thinking and System Usability Scale methods are used to produce a user interface design that is in accordance with the needs and desires of users, and to determine the usability level of a system. Based on the results of testing the first prototype using the System Usability Scale method, the score obtained is 72 with a Good rating. Meanwhile, based on the results of the second prototype test, the score obtained is 85 with an Excellent rating. Therefore, it can be concluded that designing the user interface using the design thinking method has solved the problems experienced by users, resulting in a user interface that is more attractive and easier to use, thereby increasing children's interest in learning.
ANALISIS USABILITY MENGGUNAKAN METODE USER EXPERIENCE QUESTIONNAIRE PADA WEBSITE MEDISOL Jessica Chanarly; Mohammad Fajar; Arianti
KHARISMA Tech Vol 17 No 2 (2022): Jurnal KHARISMATech
Publisher : STMIK KHARISMA Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55645/kharismatech.v17i2.237

Abstract

The aim of this study is to analyze the usability of the Medisol website using the User Experience Questionnaire (UEQ) method so that it can be further developed according to user needs in the future. This analysis was carried out using four variables from the User Experience Questionnaire method: Usefulness, Ease of Use, Ease of Learn, and User Satisfaction. Usability measurement is obtained from the percentage of feasibility based on a questionnaire distributed to users who access the Medisol website with 30 respondents. In addition, the Likert scale was used to facilitate filling out the questionnaire and processing of the results by researchers. Based on calculations on the aspects covered by the User Experience Questionnaire (UEQ) method, the results obtained are 86% on the Usefulness aspect, 86% on the Ease of Use aspect, 89.67% on the Ease of Learn aspect, and 84.48% on the User Satisfaction aspect. It is said that the Medisol website perfectly fulfills these aspects. And from the usability calculation results obtained, namely 86.13%, it can be concluded that the percentage level of the Medisol website eligibility can be categorized as very feasible.
Implementasi Algoritma Advanced Encryption Standard untuk Pengamanan Data Pengguna Aplikasi Media Sosial VirCle Mohammad Fajar; Audri Billy Kambodji; Izmy Alwiah Musdar
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.
Co-Authors Anita Carolina Willyan Arianti Audri Billy Kambodji Izmy Alwiah Musdar Jessica Chanarly Pipin Kurnia Zulbahridar Zulbahridar