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Menampilkan 1–10 dari 716 artikel
Data-Driven Machine Learning Models for Steam Turbine Efficiency Prediction
Increased electricity consumption in Indonesia requires coal-fired power plants to operate at high efficiency. This study proposes a data-driven approach to predict the efficiency of coal-fired steam turbines by utilizing 844 historical operational data points from the XYZ coal-fired power plant. Input variables include main steam pressure and temperature, main steam flow, final feedwater temperature, and condenser vacuum pressure. Four machine learning algorithms, namely Random Forest, Extra Tr...
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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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SOSIALISASI DAN PELATIHAN SISTEM INFORMASI POTENSI PARIWISATA LOMOTIK DI DESA MODELOMO
Abdi Teknoyasa
(2026)
Perkembangan teknologi digital telah mendorong transformasi tata kelola desa, termasuk pengelolaan dan promosi potensi pariwisata. Desa Modelomo memiliki beberapa potensi pariwisata yang belum didokumentasikan dengan baik dan dipublikasikan secara optimal, sehingga diperlukan media digital untuk mendukung penyebaran informasi desa. Kegiatan pengabdian masyarakat ini bertujuan untuk mengembangkan dan mengimplementasikan Situs Web Potensi Pariwisata “Lomotik” sebagai media informasi desa dan promo...
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Analisis Implementasi Keselamatan,Kesehatan Kerja, dan Lingkungan (K3L) dalam Pelaksanaan Praktik Di Workshop Politeknik Gajah Tunggal
Journal of Occupational Health, Hygiene and Safety
Vol 3
, No 1
(2026)
Research conducted at the Gajah Tunggal Polytechnic aims to explore the implementation of safety, health, security and environmental (K3L) practices in mechanical engineering workshops. The results show that students have a good understanding of work safety, with 96.8% of them aware of the potential dangers that exist in the workshop environment. Even though the majority of students, namely 82.25%, use personal protective equipment (PPE) during practicum, there are still 17.75% who do not use it...
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Perfectionism of gifted students’ long term psychological impact: A qualitative study
Rahmawati, Ajeng Intan Nur
; Hidayah, Nur
; Muslihati , Muslihati
; Rahman, Diniy Hidayatur
; Ariffudin, Imam
Gifted students often perform under pressure and high expectations while also carrying perfectionistic standards. This study analyzes the psychological impact on gifted students and giftedness program alumni with high perfectionism. The research design used a phenomenological study and utilized a purposive sampling technique on five subjects. Data were collected through semi-structured interviews, using thematic analysis assisted by NVivo 12 software. Validity testing in this study included jour...
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Pengaruh Edukasi Ibu Hamil terhadap Pencegahan Stunting di Desa Yamansari, Kabupaten Tegal
Stunting adalah masalah gizi kronis yang menjadi tantangan besar dalam bidang kesehatan masyarakat, terutama di wilayah dengan prevalensi tinggi seperti Kabupaten Tegal. Penelitian ini bertujuan untuk menganalisis pengaruh edukasi terhadap pengetahuan dan perilaku ibu hamil dalam mencegah stunting di Desa Yamansari. Penelitian ini menggunakan metode kuantitatif dengan pendekatan deskriptif dan analisis regresi. Hasil penelitian menunjukkan bahwa edukasi memiliki pengaruh positif terhadap peningk...
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Grouping of Student Attendance Discipline Levels Based on Daily Attendance Data Using the K-Means Algorithm
Putri, Syahwa Mutiara
; Rahmawati, Anita
; Bella, Alfina Chintya
; Gurowo, Damar Aji
; Arifin, Muhammad
; Putri, Syahwa Mutiara
; Rahmawati, Anita
; Bella, Alfina Chintya
; Gurowo, Damar Aji
; Arifin, Muhammad
Kedisiplinan kehadiran siswa merupakan aspek penting dalam proses pembelajaran karena mencerminkan partisipasi, tanggung jawab, dan kepatuhan terhadap aturan sekolah. Namun, data absensi sering kali hanya diperlakukan sebagai catatan administratif dan jarang dianalisis untuk mengidentifikasi pola keterlambatan yang berulang. Penelitian ini bertujuan untuk mengelompokkan pola keterlambatan siswa berdasarkan data absensi harian menggunakan algoritma K-Means guna memberikan gambaran yang lebih ters...
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Attandance Monitoring System Using Web-Based Location-Based Service At The Lumban Dolok Village Office
Arifin, Harisanul
; Suendri, Suendri
; Sinaga, Imam Adlin
; Arifin, Harisanul
; Suendri, Suendri
; Sinaga, Imam Adlin
Employee attendance is an important indicator to demonstrate the discipline and performance of village employees. The process of recording employee attendance previously at the Lumban Dolok Village Office was still done manually. This can cause problems such as incorrect data, slow report collection, and absenteeism. Therefore, the purpose of this study is to develop a web-based presence-monitoring information system that uses the Location-Based Service (LBS) method. The purpose of the LBS metho...
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Factors Influencing Cesarean Section (CS) Deliveries In Indonesia (DHS Program Analysis)
VISIKES
Vol 25
, No 1
(2026)
There are numerous potential issues that might arise during birth, leading to morbidity and even death for both mothers and fetuses. Indonesia's 2020 Maternal Mortality Rate (MMR) was 189 fatalities for every 100,000 live births. Cesarean section (CS) is one maternal care intervention that has a strong correlation with maternal and fetal morbidity and mortality. The DHS Program particularly for Indonesia, also known as the SDKI (Indonesian Demographic Health Survey), provided the secondary data...
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Evaluation of the Antibacterial Activity and Effectiveness of Ciplukan Leaf Extract (Physalis angulata L.) on the Growth of Salmonella typhi Isolates
VISIKES
Vol 25
, No 1
(2026)
This study evaluated the antibacterial activity and effectiveness of ciplukan leaf extract (Physalis angulata L.) against Salmonella typhi, the causative agent of typhoid fever. The experiment was conducted using the disk diffusion method to measure inhibition zones at various extract concentrations. Phytochemical screening confirmed the presence of flavonoids, alkaloids, tannins, and saponins, which are associated with antibacterial properties. The extract showed the highest inhibitory effect a...
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