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All Journal Jurnal Mantik JURNAL TAHURI TRJ (Tourism Research Journal)
Ramadhan, Yusuf
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Humanities Computer Science & IT Economics, Econometrics & Finance Education Environmental Science Languange, Linguistic, Communication & Media Other

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Data security using low bit encoding algorithm and rsa algorithm Ramadhan, Yusuf; Suhardi, Suhardi; Aditama, Yuda
Jurnal Mantik Vol. 8 No. 1 (2024): May: Manajemen, Teknologi Informatika dan Komunikasi (Mantik)
Publisher : Institute of Computer Science (IOCS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35335/mantik.v8i1.4945

Abstract

Ensuring the security of messages and information is paramount in today's digital era. This study proposes a combined approach using the RSA algorithm for cryptography and the Low Bit Encoding (LBE) algorithm for steganography to enhance security measures. The security process involves encrypting plaintext messages into ciphertext, which are then embedded into MP3 audio files as cover objects. Evaluation is conducted by measuring the Mean Square Error (MSE) and Peak Signal to Noise Ratio (PSNR) of the stego audio. Research findings indicate an MSE value of approximately 0.6 and a PSNR of 62.2 dB, indicating high-quality audio files. The integration of these algorithms offers a robust security level, ensuring effective message confidentiality. This research contributes to a deeper understanding of cryptography and steganography techniques in safeguarding sensitive information during digital communication
Effectiveness of Implementing CHSE (Cleanliness, Health, Safety, Environment) Protocols in Dunia Fantasi, Jakarta, Indonesia Putra, Ranandyo Muliawan; Rachmatullah, Adam; Ratu Bilqis, Linda Desafitri; Tarigan, Emenina; Ramadhan, Yusuf
Jurnal Penelitian Pariwisata Vol 8 No 1 (2024): (TRJ) Tourism Research Journal
Publisher : Institut Pariwisata Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30647/trj.v8i1.239

Abstract

The implementation of the CHSE (Cleanliness, Health, Safety, and Environment) Protocol at Dunia Fantasi Jakarta is a mandatory procedure for the business of tourism destinations in the pandemic-post-pandemic era or the new normal tourism era. The implementation of CHSE is expected to be able to create a safe, healthy, and environmentally friendly environment for all tourists and to be useful in supporting the sustainability of the tourism industry in providing a positive experience for tourists visiting these destinations. The research objective is to analyze everything about effectiveness of implementing the CHSE protocol in Dunia Fantasi Jakarta. The method that used in this study is a quantitative descriptive method, with a total of 68 respondents. The sample was selected by convenience sampling, where the data collection was carried out using a survey. The research of this test used the validity, reliability, and Kruskal Wallis tests to determine the significance level of each actor. In general, it can be concluded that the implementation of CHSE in Dunia Fantasi is classified as good or is at a score of 6. This indicates that the management is serious about implementing the CHSE protocol in every tourism room and public facility space in Dunia Fantasi. Keywords: tourism, CHSE, effectiveness, new normal tourism
Language, Identity, and Education: Exploring Students’ Linguistic Repertoires in Multilingual Indonesian Communities Maharani, Intan; Rizal, Ahmad; Putri, Rika; Ramadhan, Yusuf
Jurnal Tahuri Vol 20 No 2 (2023): August 2023
Publisher : Jurusan Pendidikan Bahasa dan Seni FKIP Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/tahurivol20issue2page99-117

Abstract

Indonesia’s multilingual landscape offers a dynamic site for exploring how language, identity, and education intersect in everyday life. This study examines how students in multilingual Pontianak, West Kalimantan, construct and negotiate their linguistic repertoires across school, home, and religious domains, and how these repertoires reflect broader ideologies of language and belonging. Employing a qualitative ethnographic approach within a multi-site case study design, the research was conducted in four secondary schools representing public, Islamic, and Catholic institutions. Data were collected through participant observation, semi-structured interviews, language portrait and mapping activities, and classroom discourse analysis involving students, teachers, and administrators. Findings reveal that students possess fluid and hybrid linguistic repertoires shaped by their sociocultural environments. While local Melayu dialects dominate informal communication, Bahasa Indonesia and English function as symbols of academic legitimacy and modernity, and Arabic indexes religious identity. Institutional language policies, however, often reinforce hierarchical ideologies that marginalize local languages. The study introduces the Multilayered Linguistic Repertoire Model (MLRM), which conceptualizes multilingualism as dynamic identity practice rather than discrete linguistic systems. The model advances theoretical and pedagogical contributions to language policy, literacy education, and sociolinguistic research in postcolonial contexts, underscoring the need for inclusive and culturally grounded approaches to multilingual education in Indonesia.
Co-Authors Adam Rachmatullah Aditama, Yuda ahmad rizal Emenina Tarigan, Emenina Linda Desafitri RB Maharani, Intan Putra, Ranandyo Muliawan Putri, Rika Suhardi Suhardi