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Lightweight Dual-Layer Chaotic Image Encryption Using Arnold Cat Map and Henon Zigzag Diffusion
Umam, Chaerul
; Abdussalam, Abdussalam
; Nursetyo, Arif
; Sugiarto, Bambang
; Islam, Husain Md Mehedul
Digital image transmission over open networks raises significant security concerns due to the high correlation and predictable statistical properties of image data. Existing chaotic encryption schemes based on Arnold Cat Map (ACM) and Henon mapping often suffer from high computational cost, parameter sensitivity, or reliance on complex multi-stage designs. To address these limitations, this study proposes a lightweight dual-layer chaotic image encryption framework that integrates ACM-based pixel...
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Pengembangan Digital Pressure Meter Berbasis IoT untuk Pengujian Tekanan Suction Pump dan Pencatatan Data Otomatis
MEDIKA TRADA : Jurnal Teknik Elektomedik Polbitrada
Vol 7
, No 1
(2026)
A suction pump requires periodic vacuum-pressure verification to support consistent performance assessment and reliable documentation. This study developed an Internet of Things (IoT)-based Digital Pressure Meter (DPM) that displays pressure in mmHg, Pascal (Pa), and bar and transmits measurement records to Google Sheets. The device integrated an Arduino Mega 2560, an MPX5050DP pressure sensor, a DHT22 sensor, a TFT LCD, and an ESP8266 module. Testing was performed at 0, 50, 100, 150, and 200 mm...
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OPTIMALISASI PRODUKSI PODCAST DAN BERITA MELALUI PEMANFAATAN TEKNOLOGI DIGITAL DI MEDIA ONLINE INDOPOSCO
Alyanabilla, Deana
; Universitas Muhammadiyah Tangerang
; Sari, Dian Nurvita
; Universitas Muhammadiyah Tangerang
; Hamidi, Hamidi
; Universitas Muhammadiyah Tangerang
; Basit, Abdul
; Universitas Muhammadiyah Tangerang
Aguna: Jurnal Ilmu Komunikasi
Vol 7
, No 2
(2026)
Penelitian ini bertujuan untuk menganalisis optimalisasi produksi podcast dan berita dengan memanfaatkan teknologi digital pada media online Indoposco, berdasarkan teori konvergensi media yang dikemukakan oleh Henry Jenkins. Teori ini mencakup teknologi, ekonomi, budaya, sosial, dan global. Dengan pendekatan deskriptif kualitatif, data dikumpulkan melalui wawancara mendalam dengan manajemen redaksi internal (seperti direktur konten, pemimpin redaksi, dan tim kreatif) serta konsumen eksternal (Ge...
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THE EFFECT OF DIGITAL FINANCIAL LITERACY ON INVESTMENT DECISIONS: THE MODERATING ROLE OF FINANCIAL ANXIETY
Jurnal Akuntansi, Keuangan dan Auditing
Vol 6
, No 2
(2026)
This study aims to examine the effect of Digital Financial Literacy on Investment Decision and investigate the moderating role of Financial Anxiety among stock and cryptocurrency investors in Semarang City. A quantitative approach was employed using a survey method involving 234 respondents selected through purposive sampling. Data were analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The results indicate that Digital Financial Literacy has a positive and significant...
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Scalable TOPSIS Variants in Web-Based Decision Support Systems: A Performance Benchmarking Study on Vectorization and Uncertainty Modelling
This study systematically benchmarks the computational performance and decision consistency of three TOPSIS variants—classical TOPSIS, vectorized TOPSIS, and Z-TOPSIS—in scalable web-based multi-criteria decision support systems (DSS). Although TOPSIS is widely used due to its simplicity and interpretability, its scalability and computational behavior under concurrent web workloads remain insufficiently explored. To address this gap, the algorithms were evaluated using datasets containing 50–500...
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Analisis Sentimen Layanan Aplikasi Pendidikan Menggunakan Multinomial Naive Bayes
Journal of Informatics Education
Vol 9
, No 1
(2026)
The rapid development of educational technology has increased the use of e-learning applications such as Ruangguru, generating a large amount of user reviews on Google Play Store that can be utilized to evaluate service quality. This study aims to analyze the sentiment of Ruangguru user reviews using the Multinomial Naive Bayes algorithm. The research data consisted of 5,000 user reviews collected through web scraping techniques from Google Play Store. The data were processed through severa...
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DEVELOPMENT OF AN ULTRASOUND PHANTOM WITH MODIFIED VISCOSITY TO SIMULATE HUMAN SOFT TISSUE
Ulin Nuha ABA, M.Si, Muhammad
; Haris Kuspranoto, Abdul
; ., Mugiyanto
; Hadi, Syaikhul
; Satrio Anggono, Christopher Nicolaus
; Ahmad ilham, Gus
; Ulin Nuha ABA, M.Si, Muhammad
; Haris Kuspranoto, Abdul
; ., Mugiyanto
; Hadi, Syaikhul
; Satrio Anggono, Christopher Nicolaus
; Ahmad ilham, Gus
MEDIKA TRADA : Jurnal Teknik Elektomedik Polbitrada
Vol 7
, No 1
(2026)
The diagnostic accuracy and success of ultrasound-based intervention procedures depend heavily on the quality of device calibration and the expertise of medical personnel. The development of ultrasound phantoms that can realistically replicate the acoustic and mechanical properties of human soft tissue is a crucial requirement in medical education and the standardisation of electromedical technology....
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Analisis Sentimen Ulasan Pengguna Layanan Publik Menggunakan Algoritma Naïve Bayes
Journal of Informatics Education
Vol 9
, No 1
(2026)
This study aims to analyze the sentiment of user reviews of the Super App Polri application on the Google Play Store using the TF-IDF feature extraction method and the Multinomial Naïve Bayes classification algorithm. Super App Polri is a digital service of the Indonesian National Police providing SIM, STNK, SKCK renewals, and public complaint services. Data were collected via web scraping of 3,500 user reviews. Preprocessing stages—cleansing, case folding, tokenizing, stopword removal, and stem...
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Integrating cognitive, narrative, and taluba into ALIVE counseling model for passive suicidal ideation: An NIH stage 1A study
Passive suicidal ideation among university students is increasingly assoc1Ated with depression, hopelessness, loneliness, and elevated suicide risk. However, most suicide prevention interventions remain focused on active suicidality, while culturally responsive interventions specifically targeting passive suicidal ideation remain limited. This study aimed to develop and validate the ALIVE Counseling Model, integrating cognitive-behavioral counseling, narrative counseling, and Taluba local wisdom...
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The influence of self-concept conflict and parental influence on emotional and personality-related career decision-making difficulties in special sports class students
This study aims to explore how self-concept conflict and parental influence impact the emergence of emotional and personality barriers in the career decision-making process, specifically among KKO students at SMA Negeri 1 Pengasih. This study employed a quantitative correlational method, involving 108 students as a sample using a saturated sampling technique. Validity was assessed through expert judgment, while reliability was calculated using Cronbach's Alpha. Data were statistically processed...
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