Abstract:Face recognition has become a common thing used in the field of surveillance and security in computer technology and image devices. This study aims to identify the usefulness of a person's face on 3 test images. This study…
dy examines the methods of cropping techniques, image enhancement through intensity measurement, and histogram analysis to improve the contrast and distribution of image intensity. In addition, the Viola-Jones algorithm is used to detect key facial features such as eyes, nose, and mouth. The results of the analysis are then applied in the feature evaluation stage, where usually between facial features are applied to measure the ratio of facial proportions. Furthermore, the comparison of proportional ratios of several images was analyzed using bar graphs and line graphs to evaluate the trend and stability of facial proportions. The results showed the best ratio stability with a smaller variation of the on-off ratio of image 2 which is 0.4762 pixels to 0.4983 pixels. Image 2 is the most ideal for face measurement systems based on geometric ratios because it provides more consistent and visible results.
Abstract:Abstract: Face detection remains a challenging task in computer vision due to real-world factors such as uneven lighting, varying viewpoints, distance, and occlusion. This study aims to develop and evaluate a real-time facial…
acial feature detection application (detecting face, eyes, nose, and mouth) using MATLAB and a webcam. Detection is performed using the Viola-Jones Cascade Classifier method through the vision.CascadeObjectDetector function. Key parameters that were adjusted include the MergeThreshold (ranging from 4 to 50 depending on the feature) and MinSize (based on estimated feature size within the frame). However, this study does not include tuning of other parameters such as FalseAlarmRate, which constitutes a limitation of the employed method. The adjustment of these parameters proved significant in improving detection accuracy and robustness under varying lighting conditions. Nevertheless, the system still encounters difficulties in detecting facial features in the presence of occlusion. This study also has the potential to serve as a foundation for further developments in face recognition, emotion detection, or biometric authentication.
Keywords: computer vision; haar cascade; MATLAB
Abstrak: Deteksi wajah merupakan tantangan dalam visi komputer karena dipengaruhi oleh kondisi nyata seperti pencahayaan tidak merata, sudut pandang, jarak, dan obstruksi. Penelitian ini bertujuan untuk mengembangkan dan menguji aplikasi deteksi fitur wajah secara real-time (wajah, mata, hidung, dan mulut) menggunakan MATLAB dan kamera webcam. Deteksi dilakukan dengan metode Viola-Jones Cascade Classifier melalui fungsi vision.CascadeObjectDetector. Parameter penting yang disesuaikan adalah MergeThreshold (antara 4 hingga 50 tergantung fitur), MinSize (mengikuti estimasi ukuran fitur dalam frame). Namun, penelitian ini tidak mencakup penyesuaian parameter lain seperti FalseAlarmRate, yang menjadi salah satu keterbatasan metode yang digunakan. Penyesuaian parameter ini terbukti signifikan dalam meningkatkan akurasi deteksi dan ketahanan terhadap variasi kondisi pencahayaan. Namun, sistem masih mengalami kesulitan mendeteksi fitur wajah jika terjadi obstruksi. Penelitian ini juga berpotensi menjadi dasar untuk pengembangan lebih lanjut dalam face recognition, emotion detection, atau biometric authentication.
Kata kunci: visi computer; haar cascade; MATLAB
Abstract:Abstract: Clustering methods such as K-Means and K-Medoids are often used to analyze data, including student data, due to their efficiency. However, this method has weaknesses, such as sensitivity to selecting cluster centers…
nters (centroids) and cluster results that depend on medoid data. Clustering, an essential technique in data analysis, aims to reveal the natural structure of the data, even in the absence of labeled information. The study, conducted with complete objectivity, compared the performance of two popular clustering methods, K-Means, and K-Medoids, on student data. Three evaluation metrics, namely the Davies-Bouldin Index (DBI), silhouette score, and elbow method, were used to compare clustering and determine the ideal number of clusters for the two algorithms. The data taken in this study are in the form of names, attendance, assignments, formative, midterm exams, final exams, and quality numbers. Based on the existing optimization results, it can be concluded that the K-Means method excels in grouping Student Data. The best results were obtained from the K-Means Algorithm with the Silhouette Coefficient Method with a value of 0.7509 in cluster 2, and the Elbow Method with a value of 1428076.08 in cluster 2, DBI K-Medoids with a value of 0.7413 in cluster 3. So, the best cluster lies in 3 clusters.
Keywords: clustering; davies-bouldin indek; elbow method; k-means; k-medoids; silhouette score;
Abstrak : Metode clustering seperti K-Means dan K-Medoids sering digunakan untuk menganalisis data, termasuk data siswa, karena efisiensinya. Namun, metode ini memiliki kelemahan, seperti sensitivitas terhadap pemilihan pusat klaster (centroids) dan hasil klaster yang bergantung pada data medoid. Clustering, sebuah teknik penting dalam analisis data, bertujuan untuk mengungkapkan struktur alami dari data, bahkan tanpa adanya informasi berlabel. Penelitian ini, yang dilakukan dengan objektivitas penuh, membandingkan kinerja dua metode clustering populer, yaitu K-Means dan K-Medoids, pada data mahasiswa. Tiga metrik evaluasi, yaitu Davies-Bouldin Index (D.B.I.), silhouette score, dan metode elbow, digunakan untuk membandingkan clustering dan menentukan jumlah cluster yang ideal untuk kedua algoritma tersebut. data yang diambil dalam penelitian ini berupa nama, kehadiran, tugas, formatif, ujian tengah semester, ujian akhir semester, angka mutu. Berdasarkan hasil optimasi yang ada, dapat disimpulkan bahwasannya metode K-Means unggul dalam pengelompokkan Data Mahasiswa. Sehingga di peroleh hasil terbaik dari Algoritma K-Means dengan Metode Silhouette Coefficient dengan nilai 0,7509 di cluster 2, dan Elbow Method dengan nilai 1428076,08 di cluster 2, DBI K-Medoids dengan nilai 0,7413 di cluster 3. Sehingga cluster terbaik terletak pada 3 cluster.
Kata kunci: klasterisasi; davies-bouldin indek; elbow method; k-means; k-medoids; silhouette score;
Abstract:Abstract: CV. Ria Kencana Ungu (RKU), as a research partner in the field of computer service, needs to improve the quality of customer service and efficiency in the process of troubleshooting computer damage. To meet these…
se needs, an expert system based on the forward chaining method was developed that is able to diagnose damage automatically. This system was developed using the waterfall method, with systematic stages from analysis to implementation. The implementation results show that the system can identify the type of damage with an accuracy rate of 89% based on validation tests on 100 real troubleshooting cases. The evaluation metric uses a comparison between the results of the system diagnosis and the results of the technician's analysis. Although the system is able to increase service efficiency by up to 40% compared to conventional methods, several obstacles were found, such as the limited initial knowledge base that impacts the accuracy of the diagnosis and the difficulty of users in understanding the system interface. Therefore, further development is needed to expand the knowledge base and improve the user experience. This study aims to develop a forward chaining-based expert system to improve efficiency, accuracy, and speed of problem solving at CV. Ria Kencana Ungu (RKU) and to increase customer satisfaction through more responsive and precise services..
Keywords: expert system; computer troubleshooting; forward chaining method
Abstrak: CV. Ria Kencana Ungu (RKU), sebagai mitra penelitian di bidang layanan servis komputer, membutuhkan peningkatan kualitas layanan pelanggan dan efisiensi dalam proses troubleshooting kerusakan komputer. Untuk memenuhi kebutuhan tersebut, dikembangkan sistem pakar berbasis metode forward chaining yang mampu mendiagnosis kerusakan secara otomatis. Sistem ini dikembangkan menggunakan metode waterfall, dengan tahapan yang sistematis dari analisis hingga implementasi. Hasil implementasi menunjukkan bahwa sistem dapat mengidentifikasi jenis kerusakan dengan tingkat akurasi sebesar 89% berdasarkan uji validasi terhadap 100 kasus troubleshooting nyata. Metrik evaluasi menggunakan perbandingan antara hasil diagnosis sistem dan hasil analisis teknisi. Meskipun sistem mampu meningkatkan efisiensi layanan hingga 40% dibandingkan metode konvensional, beberapa kendala ditemukan, seperti keterbatasan basis pengetahuan awal yang berdampak pada akurasi diagnosis dan kesulitan pengguna dalam memahami antarmuka sistem. Oleh karena itu, pengembangan lebih lanjut diperlukan untuk memperluas basis pengetahuan dan meningkatkan pengalaman pengguna. Penelitian ini bertujuan mengembangkan sistem pakar berbasis forward chaining untuk meningkatkan efisiensi, akurasi, dan kecepatan troubleshooting di CV. Ria Kencana Ungu (RKU) serta meningkatkan kepuasan pelanggan melalui layanan yang lebih responsif dan presisi.
Kata kunci: sistem pakar; troubleshooting komputer; metode forward chaining
Abstract:Abstract: Facial recognition is widely used in areas such as video surveillance and database management. Facial images have been used as a preferred biometric feature in many identity recognition systems to obtain good image…
mage results in image segmentation. A good image must pay attention to several factors, namely high resolution, good contrast, image sharpness, consistent colors, lack of noise and appropriate lighting conditions. In this face recognition research, using canny edge detection method for 10 original images paired with 10 other images. The original faces taken are male and female. Canny edge detection has a low error rate in image segmentation compared to other edge detections. The purpose of this study is to determine the edge of the image in I-rat and can display the results of a good segmentation of facial images. The results of the test data with data stored in the database in the study is 1 face image produces 67.69% accuracy and 26.92% and 8 other face images produce 100% accuracy. The average success rate of 10 experiments using image segmentation is 89.461%. In conclusion, the canny edge detection method can provide accurate results in the face recognition process.
Keywords: accuracy; canny edge detection; face recognition; image; segmentation
Abstrak : Pengenalan wajah banyak digunakan dalam diberbagai bidang seperti pengawasan video dan manajemen basis data. Gambar wajah telah digunakan sebagai ciri biometrik yang disukai di banyak sistem pengenalan identitas untuk mendapatkan hasil citra yang bagus dalam segmentasi citra. Citra yang baik harus memperhatikan beberapa faktor yaitu resolusi tinggi, kontras yang baik, ketajaman citra, warna yang konsisten, kurangnya noise dan kondisi pencahayaan yang sesuai. Pada penelitian pengenalan wajah ini, menggunakan metode deteksi tepi canny untuk 10 citra asli yang dipasangkan dengan 10 citra lainnya. Wajah asli yang diambil berjenis kelamin laki-laki dan perempuan. Deteksi tepi canny memiliki tingkat kesalahan rendah dalam segmentasi citra dibandingkan dengan deteksi tepi lainnya. Tujuan dari penelitian ini adalah menentukan tepi gambar secara akurat dan dapat menampilkan hasil segmentasi citra wajah yang baik. Hasil dari data uji dengan data yang tersimpan di database dalam penelitian adalah 1 citra wajah menghasilkan akurasi 67,69% dan 26,92% dan 8 citra wajah lainnya menghasilkan akurasi 100%. Rata-rata tingkat keberhasilan dari 10 kali percobaan dengan menggunakan segmentasi citra adalah 89,461%. Kesimpulan, metode deteksi tepi canny dapat memberikan hasil yang akurat dalam proses pengenalan wajah.
Kata Kunci : akurasi; deteksi tepi canny; citra; pengenalan wajah; segmentasi
Abstract:Abstract:Computer data security relies on preventing data theft from irresponsible parties by using cryptography method. Some cryptography algorithms have good and poor performance in encrypting and decrypting data depending…
ding on the key types. Therefore the purpose of this research is to measure the performance of the hybrid algorithm, consisting a symmetric keyBlowfish algorithm and an asymmetric key RSA algorithm, in encrypting and decrypting multiple types of data such as documents, photos, audios, and videos. The result is the performance of the hybrid algorithm is almost on par with Blowfish and provides a more secure data encryption and decryption by taking advantage of RSA algorithm. The average encryption performance of hybrid algorithm is 0.85s on document, 1.06s on photo, 3.38s on audio, and 15.56s on video. While the average decryption performance of hybrid algorithm is 1.01s on document, 1.38s on photo, 4.3s on audio, and 27.56s on video.
Keywords:Hybrid cryptography, Data security, Performance, Blowfish, RSA
Abstrak:Keamanan data komputer berhubungan dengan pencegahan dari pencurian data oleh pihak yang tidak bertanggung jawab, salah satu cara pengamanan data komputer yaitu dengan teknik kriptografi. Beberapa metode kriptografi memiliki performa yang baik dan buruk tergantung dengan tipe kuncinya. Maka dari itu, tujuan dari penelitian ini adalah mengukur tingkat kecepatan kriptografi hybrid, terdiri dari algoritma simetris Blowfish dan algoritma asimetris RSA, dengan beberapa tipe data seperti dokumen, foto, audio dan video. Hasil dari penelitian ini adalah algoritma hybrid memiliki performa yang tidak jauh berbeda dari algoritma Blowfish dan membuat proses enkripsi dan dekripsi data lebih aman dengan keunggulan dari algoritma RSA. Rata-rata kecepatan enkripsi algoritma hybrid untuk dokumen 0,85 detik, gambar 1,06 detik, audio 3,38 detik, dan video 15,56 detik. Sedangkan rata-rata kecepatan dekripsi algoritma hybrid untuk dokumen 1,01 detik, gambar 1,38 detik, audio 4,3 detik, dan video 27,56 detik.
Kata kunci:Kriptografihybrid, Keamanan data, Performa, Blowfish, RSA
Abstract:Peran sistem pakar sangat diperlukan oleh banyak kalangan untuk mampu menjawab dari beberapa permasalahan dan memberikan solusi yang terbaik melalaui sistem yang sudah diprogramkan dari seorang yang ahli dalam bidangnya.…
Bengkel Budiman di Asahan yang merupakan salah satu jenis usaha yang bergerak dalam bidang otomotif, service serta perbaikan sepeda motor, sudah memiliki banyak pelanggan, namun masih bersifat manual pada proses solusi perbaikan. Maka dibutuhkan suatu aplikasi sistem pakar, dalam menganalisa gangguan sistem pada sepeda motor untuk mempermudah proses diagnosa kerusakan dan solusi permasalahannya sehingga akan memepermudah penanganan kerusakan secara cepat dan efisien. Metode yang dilakukan pada aplikasi sistem pakar ini yaitu dengan menggunakan metode Certainty Factor (CF). Dimana Metode Certainty Factor (CF) adalah suatu metode untuk membuktikan apakah suatu fakta itu pasti ataukah tidak pasti yang berbentuk metric yang biasanya digunakan dalam sistem pakar dalam mendiagnosa kerusakan pada sepeda motor.
Kata Kunci : bengkel Budiman, gangguan sistem, metode certainty factor, sepeda motor, sistem pakar,
Abstract:The Province of Papua holds a special constitutional status under Law No. 2 of 2021, implemented through Government Regulation (PP) No. 106 of 2021, which assigns 23 governmental functions to regional authorities. The regulation…
gulation embodies asymmetric decentralization intended to protect the rights of Indigenous Papuans (OAP) and address local needs. However, it raises legal concerns regarding ambiguous authority distribution between central, provincial, and municipal levels, as well as the unclear operational role of the Papuan People’s Assembly (MRP). The main research problem is whether PP No. 106/2021 provides a coherent and constitutionally consistent governance framework. This study applies doctrinal legal research using normative-analytical methods, including statutory interpretation, constitutional tests, and comparative perspectives. The findings indicate weak accountability mechanisms in managing Special Autonomy Funds, limited integration of customary law, and institutional fragility in newly established bodies such as BP-DOP and UPAP. The study concludes that PP No. 106/2021 does not fully align with the constitutional principles of legal certainty and decentralization. It recommends substantial revisions, strengthening MRP’s legal status, formal recognition of customary law through Perdasus, and an institutional blueprint with clear performance indicators to ensure effective, inclusive, and adaptive governance in Papua
Abstract:Objectives - Intellectual curiosity about Islamic entrepreneurship, Islamic finance and Sustainable Development Goals (SDGs) whose issues have increased recently in various sharia sectors. Design/Methodology/approach - Based…
ased on the scopus database, descriptive bibliometric analysis with the visualization tool VosViewer was used to assess 385 documents on Islamic entrepreneurship, Islamic Finance and SDGs, which peaked in 2024 based on the period of 2010-2024. Findings- This study found many articles on Islamic entrepreneurship, Islamic finance and the SDGs. According to this study, Malaysia is the country that publishes the most publications of this research compared to other countries. Then the University of Brunei Darussalam was the most prolific affiliate to publish articles on this. The history of article production growth that started from 2010-2024, continues to increase and peaks in 2024, with 55 documents and the lowest number of documents in 2010 with 10 published documents. This is increasing because there may be a need for sharia synergy to increase Islamic entrepreneurship in Islamic finance and sustainable development (SDGs). Romadoni, V as the most prolific writer about this research. Islamic entrepreneurship, Islamic finance and SDGs provide the potential for sustainable development and is in line with the goals of sharia, namely maqashid sharia for the benefit of the ummah, this encourages sustainable development (SDGs) through Islamic entrepreneurship and Islamic finance. Practical Implications - Research can be used as a useful research proposal for future researchers who use bibliometric methods in systematic literature review by introducing the network of various variables related to this research, then by getting to know famous authors in the field can provide opportunities to collaborate for further research. In addition, this study makes it easier for future researchers to be able to expand even more by looking at the variables obtained in this study as gaps to be researched further.
Abstract:This study aims to examine the relationship between employee training and development programs and customer satisfaction levels within the hospitality sector, with a particular focus on MaxOne Hotels in Makassar. Employing…
ng a mixed-methods approach, the research integrates employee surveys, customer feedback, and performance metric analysis to assess the influence of training programs on service quality and customer experiences. The findings reveal that employee training and development variables account for only 1.4% of the variance in customer satisfaction, with the remaining 98.6% influenced by other factors. Nevertheless, well-structured training program designs were shown to significantly enhance employees' critical thinking, communication, emotional regulation, and problem-solving skills. Furthermore, technology-based training demonstrates substantial potential for improving service efficiency and facilitating adaptation to operational innovations. In conclusion, while the direct impact of training on customer satisfaction is relatively minor, thoughtfully designed training programs remain essential for delivering high-quality customer experiences and sustaining competitiveness in the industry. This research offers valuable insights into strategies for optimizing training effectiveness in the hospitality sector.