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Raissa Amanda Putri
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Bigint Computing Journal
Published by Ali Institute of Research and Publication
ISSN : -     EISSN : 30325374     DOI : 10.55537/bigint
Core Subject : Science,
Computer Science & IT
Bigint Computing Journal is a journal that discusses science in the field of computing, namely: Computer Engineering (CE): Computer Engineering/Computer Systems/Information Engineering, Computer Science (CS): Computer Science/Informatics, Software Engineering (SE): Engineering Software, Information Systems (IS): Information Systems, and Information Technology (IT): Information Technology. The Bigint Computing Journal is published two times a year in the January and July editions. The submitted manuscript will be received by the editor and then checked for similarity to the Turnitin application. The review process is carried out using peer review.
Arjuna Subject : Ilmu Komputer (semua kategori) - Ilmu Komputer (Lain-Lain)
Articles 7 Documents
 1 
Search results for , issue "vol 4 no 2 (2026)" : 7 Documents clear
Analysis of Silica Gel Capability in Suppressing Humidity within Filament Storage Boxes via an Internet of Things-Based Monitoring Application Harlan Kurnia AR; Yustria Handika Siregar
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1827

Abstract

3D printing filament is highly sensitive to ambient humidity. Moisture absorption by the filament can degrade print quality, causing issues ranging from stringing to complete print failure. This study aims to analyze the ability of silica gel to suppress and maintain humidity stability within a filament storage box using an Internet of Things (IoT)-based monitoring system. The core control system utilizes an ESP32 microcontroller integrated with a DHT11 sensor to detect temperature and relative humidity (%RH) inside the container in real-time. Sensor data is transmitted wirelessly via the ESP32's built-in Wi-Fi connectivity to a Firebase cloud database. Users can remotely monitor storage conditions through an Android application developed using the Kodular platform. The experimental method involved testing humidity reduction performance using varying masses of silica gel within an airtight container. Test results indicate that increasing the mass of silica gel significantly accelerates the rate of humidity reduction and extends the duration for which storage conditions remain stable at the ideal level—below 30% RH. The developed IoT system successfully achieved precise, real-time data synchronization between the hardware and the monitoring application without requiring a local display screen. This research offers a practical solution for 3D printer users to preserve filament quality while providing empirical data on the effectiveness of silica gel quantities as a desiccant.
Performance Evaluation of BPCS Steganography for Identity Data Embedding in Academic Certificate Images Suhardi Suhardi; Abdul Halim Hasugian
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1850

Abstract

Digital academic certificates require protection against unauthorized manipulation while preserving their visual appearance. This study evaluates Bit Plane Complexity Segmentation (BPCS) as a covert identity-data embedding layer for certificate images. The MATLAB implementation converts Pure Binary Code to Canonical Gray Code, partitions bit-planes into 8 × 8 blocks, and embeds payloads in regions whose complexity exceeds a selected threshold. Performance was assessed through threshold sensitivity, payload scaling, grayscale and RGB comparison, a 40,000-bit large-payload feasibility test, consistency across five genuine certificate images, and robustness under common image manipulations. Under pristine lossless conditions, the tested payloads were recovered exactly and stego-image quality remained high, with PSNR values from 68.53 to 84.49 dB. On five genuine certificates, mean PSNR was 83.46 dB with a standard deviation of 0.63 dB. Embedding capacity declined sharply when the complexity threshold exceeded 0.5, while RGB offered additional theoretical capacity. However, resizing, cropping, rotation, noise, blur, and brightness changes produced substantial bit errors or extraction failure. The results therefore support BPCS as a high-capacity, low-distortion data-hiding layer for controlled lossless certificate workflows, but not as a standalone authentication or manipulation-robust security mechanism.
Android Geographic Information System with AHP for Strategic MSME Location Selection Ami Amanda; Triase Triase
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1851

Abstract

Strategic site selection for micro, small, and medium enterprises (MSMEs) requires transparent assessment of spatial and operational criteria. This study develops an Android geographic information system integrating the Analytic Hierarchy Process (AHP) and OpenStreetMap to screen 30 locations across 25 sub-districts in Asahan Regency, Indonesia. Five criteria were defined from literature, field observation, and consultation with one local-government practitioner. Accessibility received the highest weight (0.3333), followed by safety and comfort (0.2667), proximity to crowds (0.2000), infrastructure (0.1333), and local resources (0.0667). Sekitar Stasiun Kisaran ranked first (0.0391), only 0.0004 above the next two alternatives. The system links numerical priorities with interactive mapping and provides an auditable mobile workflow for preliminary location screening. However, CR = 0.000 results from deterministic ratio construction, not broad expert consensus, and the ranking should not be interpreted as a causal prediction of business performance.
Streamlit-Based Durian Yield Forecasting Using an ARIMA Model Nurul Ifkah Lolona Silalahi; Triase Triase
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1852

Abstract

Durian production in Dairi Regency, North Sumatra, fluctuates substantially across quarters, creating uncertainty for harvest planning and distribution. This study develops a lightweight decision-support system that integrates an AutoRegressive Integrated Moving Average (ARIMA) forecasting pipeline with a Streamlit web application. The source dataset contains 41,060 agricultural harvest records from 2020–2024, aggregated into 20 quarterly regional observations. The raw series was non-stationary according to the Augmented Dickey–Fuller test (ADF = −0.449, p = 0.901), while first-order differencing produced a stationary series (ADF = −4.120, p = 0.0009). Automated model search selected ARIMA (4,0,1), with AIC = 401.649 and BIC = 407.624. A chronological 80/20 holdout evaluation on the four quarters of 2024 produced an RMSE of 1.16 tons, MAE of 1.15 tons, and MAPE of 4.33%, recalculated from the reported quarter-level forecasts. The Streamlit implementation integrates data management, stationarity diagnosis, automated parameter selection, and forecast visualization. The results indicate that an interpretable ARIMA baseline can provide useful short-horizon regional forecasts when historical data are limited, although the short series requires cautious generalization and further validation.
OCR-LSTM-Based Detection of Pork-Derived Non-Halal Ingredients from Food Labels Muhammad Siddik Hasibuan; Suhardi Suhardi; Bagus Ageng Alfahri
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1856

Abstract

Packaged food labels may contain technical and multilingual ingredient terms that complicate preliminary screening for pork-derived non-halal substances. This study develops a web-based pipeline that integrates optical character recognition (OCR), automatic translation, and Long Short-Term Memory (LSTM) text classification. A public dataset of 528,092 labeled ingredient records, comprising 291,920 halal and 236,172 pork-related non-halal records, was used for model development. After text normalization, tokenization, and sequence padding, the data were divided into training, validation, and testing subsets using an 80:10:10 ratio. The final test set contained 52,810 records. The confusion matrix contained 29,182 true negatives, 12 false positives, 41 false negatives, and 23,575 true positives, corresponding to 99.90% accuracy, 99.95% precision, 99.83% recall, and a 99.89% F1-score. The web implementation accepts label images, extracts text, translates non-English content, and applies the trained classifier. The reported metrics evaluate the text classifier rather than the complete OCR-to-classification pipeline; therefore, the system should be treated as a preliminary screening tool and not as a substitute for formal halal certification.
Naïve Bayes-Based Classification of Wrestling Athletes Using Physical Performance Data Achmad Zoemirrotin Siregar; Ali Ikhwan
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1868

Abstract

Objective evaluation of athletes’ physical test data can help reduce subjectivity in athlete assessment. This study develops a web-based classification system using the Naïve Bayes algorithm to classify wrestling athletes as Successful or Unsuccessful based on speed, balance, and agility attributes. The study uses a quantitative approach and the Waterfall software development model. The dataset consists of 36 wrestling athlete records, with 30 records used as training data to calculate prior and conditional probabilities and 6 independent records reserved for final testing; the testing records were not used during the training or probability calculation process. Speed is categorized as Slow, Normal, or Fast; balance as Poor, Fair, or Good; and agility as Low, Medium, or High. The target labels, Successful and Unsuccessful, were assigned independently based on recorded athlete performance assessment outcomes and were not derived from the predictor variables. The Naïve Bayes classification process calculates class priors, attribute likelihoods, posterior probabilities, and predicted classes. For the illustrated test case with Slow speed, Poor balance, and Low agility, the normalized probabilities were 4% for Successful and 96% for Unsuccessful. The six-record performance evaluation produced 83.33% accuracy, 75% precision, 100% recall, and an 85.71% F1-score. The system can support structured and more objective athlete assessment; however, the limited dataset size may restrict the generalizability of the results and requires validation using a larger dataset.
Student Awareness of Information Ethics in the Use of Artificial Intelligence for Academic Writing Based on the PAPA Framework Alya Rasyifa; Franindya Purwaningtyas
Bigint Computing Journal Vol 4 No 2 (2026)
Publisher : Ali Institute of Reseach and Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55537/bigint.v4i2.1879

Abstract

The rapid development of Artificial Intelligence (AI) has provided new opportunities for students in academic activities and scientific writing while raising ethical concerns related to privacy, information accuracy, ownership, and accessibility. This study aimed to describe students’ self-reported awareness and perceptions of Information Ethics in using AI for scientific writing based on Mason’s Privacy, Accuracy, Property, and Accessibility (PAPA) framework. This study employed a quantitative descriptive approach. Data were collected through a closed-ended questionnaire from 100 Universitas Sumatera Utara students selected using purposive sampling. The instrument consisted of 18 Information Ethics items based on the PAPA dimensions and 14 supporting items related to scientific writing, covering aspects of the Theory of Planned Behavior and Information Literacy. Data were analyzed using descriptive statistics, Corrected Item-Total Correlation, and Cronbach’s Alpha. The results showed that the overall mean score of Information Ethics was 3.9689, indicating a high category. Privacy obtained the highest mean score (4.0400), followed by Accuracy (3.9760), Property (3.9500), and Accessibility (3.8900). The supporting constructs also showed relatively high descriptive results. These findings reflect respondents’ self-reported awareness and perceptions rather than direct evidence of actual ethical behavior. The findings provide contextual input for strengthening information literacy and responsible AI-use guidelines in higher education.

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