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All Journal JSM (Jurnal SIFO Mikroskil) Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Jurnal Mitra Pengabdian Farmasi

Hernawati Gohzali

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Author-ID : 2985474

Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Dentistry Electrical & Electronics Engineering Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Transportation Veterinary

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Articles

Kajian Algoritma Peningkatan Kontras Citra Dengan Fast Hue Dan Range Preserving Histogram Equalization Specification Pahala Sirait; Albert Albert; Hendri Hendri; Juniardi H; Hernawati Gohzali
Jurnal SIFO Mikroskil Vol 17, No 2 (2016): JSM Volume 17 Nomor 2 Tahun 2016
Publisher : Fakultas Informatika

Faktor pencahayaan yang kurang saat suatu citra diakuisisi membuat citra menjadi gelap. Untuk memperbaiki tingkat kecerahan kontras citra, beberapa metode telah dilakukan seperti Fast Hue and Range Preserving Histogram Equalization Specification yang meliputi Algoritma Naik and Murthy, algoritma Optimal Range-Preserving Enhancement, algoritma Multiplicative Color Enhancement dan algoritma Additive Color Enhancement. Pada tahap awal dilakukan proses perataan histogram (Histogram Equalization (HE)). Namun dari beberapa referensi belum dapat ditentukan algoritma yang lebih baik dalam proses peningkatan kontras tersebut. Skenario pengujian dilakukan dengan menurunkan nilai lightness dari suatu citra, memproses citra gelap dengan algoritma yang dibahas, dan mengukur perbedaan citra hasil algoritma dengan citra asli menggunakan Structural Similarity Index (SSIM). ??? Hasil pengujian menunjukkan bahwa ??? nilai SSIM tertinggi didapatkan dengan menggunakan algoritma Optimal Range-Preserving Enhancement dan algoritma Multiplicative Color Enhancement. Pada algoritma Optimal Range-Preserving Algorithm, nilai SSIM tertinggi diperoleh dengan menggunakan nilai Lamda (???») di atas 0.6.

Rekomendasi Buku Menggunakan K-Nearest Neighbor (KNN) dan Binary Particle Swarm Optimization (BPSO) Hernawati Gohzali; Sunario Megawan; Erwin Erwin; Jeffrey Onggo
Jurnal SIFO Mikroskil Vol 20, No 1 (2019): JSM Volume 20 Nomor 1 Tahun 2019
Publisher : Fakultas Informatika

Most of recommender systems are based on content can be helpful to find recommendation book suitable for reader but it only consider about a liked book by user without considered about the disliked one. For solving the problem, a recommendation based on content of liked and dislike book by user is done. In this research, we applied Binary Particle Swarm Optimization(BPSO) to select feature from book that the reader like and K-Nearest Neighbor(KNN) are use for classify book data which had the closest distance to the book that the reader liked and disliked. Testing the accuracy of the recommendations is done by comparing the results of recommendations in the book data that do not apply feature selection with book data that applies selective features to test the effect of application of feature selection on book recommendations. The result of book recommendation accuracy testing with feature selection give a better recommendation for user than recommendation without feature selection.

Pelatihan Pengenalan Pemrograman Komputer pada SMA Dharma Bakti Lubuk Pakam Arwin Halim; Hernawati Gohzali; Irpan Adiputra Pardosi; Ng Poi Wong; Sunario Megawan
ABDIKAN: Jurnal Pengabdian Masyarakat Bidang Sains dan Teknologi Vol. 4 No. 2 (2025): Mei 2025
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/abdikan.v4i2.4963

The lack of ability of the students of SMA Dharma Bakti Lubuk Pakam in mastering computers, especially the programming field, is a significant challenge in preparing them for the digital era. In the industrial era 4.0, mastering programming skills is essential, especially the Python programming language which is widely used in data analysis, artificial intelligence, and application development. To overcome this problem, Mikroskil University organized an introduction to Python programming training through Community Service activities. The training covered both theory and hands-on practice to build a better understanding. To measure the success of the training, the pre-test and post-test were conducted as well as a quiz-based evaluation. The training results showed a significant increase in students' understanding level of 85.42%. The results of the evaluation of the level of mastery of the training material showed that 26.67% of students mastered the material well, and 16.66% of students moderately mastered the material. However, 56.67% of the students still lacked mastery of the material due to the limited duration of the training and limited experience in programming. Overall, this training succeeded in improving digital literacy for students while supporting technological transformation in the school environment. To improve the effectiveness of the training, a longer training duration and more interactive learning methods are recommended. It is also recommended that similar training be extended to other schools to improve the programming skills of the younger generation and their readiness to face the challenges of the digital industry.

Penggunaan Aplikasi Microsoft Office 365 Sebagai Alat Pembelajaran Daring Wulan Sri Lestari; Hernawati Gohzali; Naca Perangin-Angin
Jurnal Mitra Pengabdian Farmasi Vol. 1 No. 3 (2022): Juni 2022
Publisher : Akademi Farmasi YPPM Mandiri

Show Abstract | Download Original | Original Source | Check in Google Scholar

Online learning is a distance learning process through the use of technology that must be done during a pandemic. The ability and skills to use information and communication technology applications are important things that must be possessed by students to be able to follow the learning process well. One of the applications in the field of information and communication technology that has features to support the online learning process is Microsoft Office 365. This application can make it easy for students to collaborate, communicate, share learning documents and view the learning outcomes that have been done. Based on the results of the questionnaire, it was found that the participants had never used Microsoft Office 365 as an online learning medium so they did not have the ability and good skills to utilize the application. To overcome this problem, in this service activity, training on the use of Microsoft Office 365 applications will be carried out in the form of workshops for 2 times and followed by task assignment activities and asynchronous task monitoring on the Microsoft Teams channel that has been determined. Then an evaluation process was carried out by giving pre-test and post-test questions when the training activities were carried out. Based on the results of the pre-test and post-test, it was found that after the training was completed there was an increase in participants' understanding of the use of Microsoft Office 365 applications such as Microsoft Teams, Outlook, OneDrive, Microsoft Forms, Microsoft Stream, Microsoft Office online.

Co-Authors Albert Albert Arwin Halim Erwin Erwin Hendri Hendri Irpan Pardosi Jeffrey Onggo Juniardi H Naca Perangin-Angin Ng Poi Wong Pahala Sirait Sunario Megawan Wulan Sri Lestari

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