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All Journal CSRID Servis : Jurnal Pengabdian dan Layanan kepada Masyarakat
Selamat Subagio
Universitas Al Washliyah Labuhanbatu
Religion Civil Engineering, Building, Construction & Architecture Computer Science & IT Environmental Science Other

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Sistem Pakar Identifikasi Hama Tanaman Perkebunan Menggunakan Metode Analytical Hierarchy Process (AHP) Yusup Anwar Siregar; Selamat Subagio; Wita Ferwati
CSRID (Computer Science Research and Its Development Journal) Vol. 18 No. 1 (2026): Februari 2026
Publisher : LPPM Universitas Potensi Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22303/csrid-.18.1.2026.46-58

Abstract

Plantation crops such as oil palm, rubber, tea, and coffee are susceptible to pest attacks that can reduce crop productivity. The process of pest identification in the field often encounters obstacles due to limited experts and response time. This study aims to build an expert system based on the Analytical Hierarchy Process (AHP) method to help identify pests based on symptoms and severity of attacks. The AHP method is used to form a decision hierarchy, compile a pairwise comparison matrix, calculate priority weights, and conduct consistency tests. Alternative pests described include planthoppers, stem borers, leaf rollers, stink bugs, and rats, with categories of light and heavy attack levels. The calculation results show the highest composite value in the light category of 0.50717 and heavy of 0.25065. Validation of 15 test cases shows a system accuracy level of 93.33% compared to experts. Usability testing obtained a learnability value of 92.88%, efficiency of 92%, memorability of 94%, error of 94%, and satisfaction of 88.6%. These results indicate that the system is suitable for use as a tool for early identification of plantation pests.
Sistem Pakar Diagnosis Kerusakan Rambut Berbasis Web Menggunakan Metode Certainty Factor Tisna Destiana; Samsir; Selamat Subagio
CSRID (Computer Science Research and Its Development Journal) Vol. 18 No. 1 (2026): Februari 2026
Publisher : LPPM Universitas Potensi Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22303/csrid-.18.1.2026.83-97

Abstract

This study develops a web-based expert system for diagnosing hair damage using the Certainty Factor (CF) method to support early self-assessment and treatment recommendations. The knowledge base consists of five types of hair damage and five main symptoms with expert-validated belief weights. The CF method is applied to compute diagnostic confidence based on symptom combinations selected by users. System evaluation was conducted using test-case scenarios and numerical CF calculations. The results show that for three dominant symptoms, the system produces a CF value of 0.952, indicating a 95.2% confidence level. The novelty of this study lies in the expert-weighted knowledge modeling, transparent CF numerical analysis, and inference aggregation correction evaluation. The system can serve as an initial consultation tool before professional diagnosi.
E-Canteen Universitas Al Washliyah Labuhanbatu Berbasis WEB Selamat Subagio; Samsir; Muhammad Rusdi
CSRID (Computer Science Research and Its Development Journal) Vol. 18 No. 2 (2026): Juni 2026
Publisher : LPPM Universitas Potensi Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22303/csrid-.18.2.2026.395-408

Abstract

The rapid advancement of information technology has driven significant changes across various sectors, including facility management within higher education institutions. The Universitas Al Washliyah Labuhanbatu canteen—a crucial facility supporting daily campus activities—frequently faces operational challenges. These issues include long customer queues during break times, a lack of transparency in financial record-keeping, and difficulties for canteen owners in monitoring real-time stock levels. To address these problems, this study aimed to design and implement a web-based e-canteen management system. The system was designed to integrate the functional needs of students and lecturers (as buyers), canteen owners (as sellers), and campus administrators. The development process adopted the System Development Life Cycle (SDLC) methodology, encompassing user requirements analysis, database modeling (using ERD and DFD), and coding utilizing HTML, CSS, PHP, and MySQL technologies. Functionality testing demonstrated that the e-canteen application successfully reduces customer waiting times through an online ordering feature, provides clear digital cash flow records for management, and minimizes errors in product inventory tracking. The implementation of this platform is expected to accelerate digital transformation and help realize the "smart campus" concept at Universitas Al Washliyah Labuhanbatu.
Pengembangan Sistem Informasi Laporan Praktik Kerja Lapangan Mahasiswa Berbasis Web Menggunakan Metode Waterfall di Universitas Alwashliyah Labuhanbatu Abdul Hakim Dalimunthe; Selamat Subagio; Samsir
CSRID (Computer Science Research and Its Development Journal) Vol. 18 No. 2 (2026): Juni 2026
Publisher : LPPM Universitas Potensi Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22303/csrid-.18.2.2026.232-244

Abstract

The management of Field Work Practice (PKL) reports at the Faculty of Computer Science, Alwashliyah University (UNIVA) Labuhanbatu, is currently handled manually, leading to various issues such as delayed report submissions, document archiving difficulties, ineffective supervision monitoring, and slow grading processes by supervisors. This research aims to develop a web-based PKL report information system capable of centrally integrating administrative processes—ranging from student data management, placement, and report uploading to supervision monitoring and grading. The system was developed using the Waterfall method, comprising stages for requirements analysis, system design, implementation, testing, and maintenance. It was built using PHP, MySQL, and the Bootstrap framework. System testing employed the Black Box Testing method across 25 scenarios covering user authentication, management of student, lecturer, and industry partner (DU/DI) data, report uploads, the supervision process, and grading. Test results demonstrated that all scenarios executed successfully according to functional requirements, achieving a 100% success rate. Implementing this system improves the efficiency of PKL administration, accelerates information exchange among students, supervisors, and administrators, and results in report archiving that is more structured, well-documented, and accessible compared to the manual process.
Co-Authors Abdul Hakim Dalimunthe Muhammad Rusdi Rahmad Aditiya Reagen Surbakti Saragih Samsir Syafaruddin Munthe Tisna Destiana Wita Ferwati Yusup Anwar Siregar