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Menampilkan 11–20 dari 3388 artikel
Attention-Augmented GRU for Stock Forecasting: A Trade-Off Between Directional Accuracy and Price Prediction Error
R. Daniel Hartanto
; Guruh Fajar Shidik
; Farrikh Alzami
; Ahmad Zainul Fanani
; Aris Marjuni
; Abdul Syukur
Journal of Computing Theories and Applications
Vol 3
, No 4
(2026)
Attention mechanisms have been widely incorporated into recurrent neural network architectures for financial time series forecasting, with most prior work reporting improvements in price-level error metrics. This study revisits that claim through a controlled empirical comparison of four deep learning architectures on nearly two decades of Telkom Indonesia (TLKM) closing price data from the Indonesia Stock Exchange (IDX). The models evaluated are a three-layer Gated Recurrent Unit (GRU) baseline...
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Evaluating Civil Servant Selection through Machine Learning Analysis of National Insight, General Intelligence, and Personal Characteristics Test Scores
This study analyzes the score distribution of 2,490 candidates in the 2024 Ministry of Finance Public sector recruitment, focusing on the CNI, GIT, and PCT sections using machine learning classification. Models used include Logistic Regression (accuracy 0.7897), Random Forest (0.9779), and XGBoost (0.9809), all trained with default parameters (n_estimators=100, max_depth=None) and evaluated using accuracy, precision, recall, and F1-score. While ensemble models outperformed Logistic Regression, t...
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Cam Simulation and Dimensional Verification of CNC-Machined Orthopaedic Femoral Components: Toolpath Optimization and 3D-Scan Metrology
Setyoadi, Yuris
; Rifky Ismail
; Bayuseno, Athanasius Priharyoto
; I Nyoman Jujur
; Novriansyah, Robin
; Darmanto
; Prawibowo, Hartanto
; Anggoro, Paulus Wisnu
This study investigates the optimization of manufacturing femoral components for Total Knee Replacement (TKR) using Computer-Aided Manufacturing (CAM) simulation and 5-axis CNC milling, followed by dimensional verification based on 3D scanning. The machining process was simulated in Autodesk PowerMill to generate collision-free toolpaths for AISI 316L stainless steel. Dimensional verification was conducted by comparing the 3D-scanned physical model (using Creality CR-Scan Ferret Pro) with the or...
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Altitude-dependent Variation in Antibacterial Properties of Red Ginger (Zingiber officinale var. rubrum): Implications for Natural Anti-Salmonella Agents
Red ginger contains diverse bioactive compounds with strong antioxidant and antibacterial activities. This study investigated the influence of growth location on the anti-Salmonella activity of red ginger extracts from seven regions in Java, Indonesia. The fractions were analyzed for total phenolic and flavonoid contents, as well as antioxidant capacity using DPPH and FRAP assays. Antibacterial activity was assessed against Salmonella using the Kirby-Bauer disk diffusion method. Results showed t...
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KINERJA BIDAN TERHADAP CAKUPAN IMUNISASI DASAR LENGKAP: STUDI KASUS DI PUSKESMAS BATUWARNO
Jurnal Kesehatan Masyarakat Indonesia
Vol 21
, No 1
(2026)
Latar belakang: Capaian Imunisasi Dasar Lengkap (IDL) di Jawa Tengah mengalami fluktuasi dan belum mencapai target Renstra pada beberapa tahun terakhir, dengan penurunan signifikan terjadi di tingkat kecamatan seperti di Puskesmas Batuwarno. Kinerja bidan sebagai pelaksana utama memegang peranan krusial dalam keberhasilan program ini. Tujuan: Penelitian ini bertujuan untuk menganalisis kinerja bidan terhadap cakupan imunisasi dasar lengkap ditinjau dari aspek perencanaan, pelaksanaan, serta pema...
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Optimization of Coconut Fiber and Styrofoam Composition in Concrete to Improve Strength and Sound Absorption
Purwanto
; Firmawan, Ferry
; Ahmad, Fahrudin
; Purwanti, Hani
; Husna, Aimmatul
; Darus, Nadirah
; Haron, Zaiton
; Yahya, Khairulzan
This study aimed to evaluate the effect of coconut husk and Expanded Polystyrene (EPS) composition on the mechanical and acoustic properties of lightweight concrete. The research was conducted experimentally using a two-way factorial design with coconut husk variations of 0%, 0.5%, 1%, 1.5%, and 2% of cement weight and EPS variations of 0%, 10%, 20%, and 30% of coarse aggregate volume. A total of 20 mix variations (5 coir levels × 4 EPS levels) were prepared with three replications for each test...
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System Dynamics-Based Industrial Modeling of Aluminium Processing in Indonesia
Advance Sustainable Science, Engineering and Technology (ASSET)
Vol 8
, No 2
(2026)
The Indonesian aluminum industry has great potential due to its abundant bauxite reserves, but downstream development to increase added value is still limited. This study uses a dynamic system model to simulate the development of Indonesia's aluminum industry, taking into account variables such as bauxite reserves, production capacity, demand, energy costs, raw material prices, and downstream development barriers. A scenario-based simulation method is applied to evaluate the impact of various po...
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Transformasi Perilaku Wisatawan dalam Aktivitas Pendakian Gunung: Motivasi, Mediasi Digital, dan Dinamika Sosial di Era Postmodern
Irianto Putra, Adhika Graha
; Dwi Hadian, Mohammad Sapari
; Nugraha, Awaludin
; Maharani, Najla Raisa
Jurnal Riset sosial humaniora, dan Pendidikan (Soshumdik)
Vol 5
, No 1
(2026)
This study aims to analyze the transformation of tourist behavior in mountain hiking activities in the Sindoro, Sumbing, and Slamet (3S) area of Central Java within the context of nature-based tourism trends and digital mediation. A descriptive qualitative approach was employed, involving eight purposively selected hikers. Data were collected through semi-structured interviews, participant observation, and analysis of social media posts. The findings reveal a shift in motivation from physical ch...
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Manifestasi Kecemasan dan Depresi dalam Perilaku Digital: Analisis Psikologis terhadap Siklus Doomscrolling pada Mahasiswa : Analisis Psikologis Terhadap Siklus Doomscrolling pada mahasiswa
Jurnal Asosiatif
Vol 5
, No 1
(2026)
Integrasi media sosial dalam kehidupan mahasiswa membawa risiko psikologis baru berupa perilaku doomscrolling dan social media fatigue yang mengancam kesejahteraan mental. Penelitian ini bertujuan untuk memahami dinamika psikologis di balik perilaku doomscrolling serta mengurai keterkaitannya dengan simptom depresi dan kecemasan pada mahasiswa. Metode yang digunakan adalah studi kepustakaan (library research) dengan pendekatan deskriptif-analitis terhadap literatur ilmiah yang dipublikasikan ant...
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The Effect Of Problem-Based Learning Model Assisted By Live Worksheets On Students' Mathematical Reasoning Ability
International Journal of Research in Education
Vol 5
, No 2
(2026)
This study aims to determine the effects of using the problem-based learning (PBL) model and live worksheet media on students' mathematical reasoning skills. The research method used was quantitative and quasi-experimental. The study included all Grade X students from a private high school in Jakarta who had relatively balanced math skills. The study sample comprised four classes (X.1, X.2, X.4, and X.6), which were randomly selected using random sampling technique and each received a differe...
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