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Wahyusari, Retno
Sekolah Tinggi Teknologi Ronggolawe Cepu
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Perbandingan Metode Reduksi Noise pada Citra Digital Berbasis Website Salsabilla, Dea; Wahyusari, Retno
Jurnal Komtika (Komputasi dan Informatika) Vol 9 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/komtika.v9i2.14966

Abstract

Citra digital memiliki peran penting dalam penyampaian informasi visual, namun kualitasnya sering menurun akibat gangguan berupa noise. Penelitian ini membahas tiga jenis noise utama, yaitu salt and pepper, gaussian, dan speckle, yang direduksi menggunakan tiga metode filter, yaitu median, gaussian, dan bilateral. Pengujian dilakukan dengan menerapkan setiap filter terhadap citra uji yang terkontaminasi berbagai jenis noise untuk mengevaluasi performa berdasarkan nilai Mean Squared Error (MSE) dan Peak Signal-to-Noise Ratio (PSNR). Hasil menunjukkan bahwa filter median secara konsisten memberikan performa terbaik pada ketiga jenis noise, dengan nilai MSE terendah sebesar 7,007 dan PSNR tertinggi 39,675 dB pada noise salt and pepper, MSE 72,046 dan PSNR 29,554 dB pada noise gaussian, serta MSE 60,917 dan PSNR 30,283 dB pada noise speckle. Sementara itu, filter gaussian dan bilateral menghasilkan nilai yang relatif dekat, namun tidak melampaui performa filter median. Kombinasi beberapa filter juga tidak selalu meningkatkan kualitas citra secara signifikan. Dengan demikian, dapat disimpulkan bahwa filter median merupakan metode reduksi noise paling efektif secara umum dalam mempertahankan kualitas citra digital terhadap berbagai jenis noise.
Optimization of English Ability for Grade 10 Students at At-Tajdid Blora High School Through Speak It, Love It, Ace It Method Helmi Gunawan; Hertnacahyani, Eva; Wahyusari, Retno; Suryanto, Hendri
English Education:Journal of English Teaching and Research Vol 10 No 2 (2025): English Education
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/jetar.v10i2.26734

Abstract

The problems addressed in this study are the students’ low confidence and performance in English speaking and comprehension due to uniform teaching strategies that do not accommodate diverse learning needs. Speak It, Love It, Ace It" method is used to solve the problems. This study aims to enhance the English-speaking proficiency and confidence of 10th-grade students at SMA At-Tajdid by assessing their current abilities, implementing the Speak It, Love It, Ace It method within a differentiated learning framework tailored to diverse proficiency levels and learning styles, and evaluating the effectiveness of this integrated intervention through both qualitative and quantitative measures. The study, involving 25 purposively selected 10th-grade students, employed a two-cycle design of planning, action, observation, and reflection, using observation, tests, interviews, and documentation to analyze changes in students’ performance and participation across cycles. The findings indicated a clear positive trend, with notable gains in speaking fluency, vocabulary use, and classroom engagement. Students demonstrated greater motivation and more positive attitudes toward learning English, and overall performance improved significantly across cycles, surpassing the established success criteria. These results highlight the potential of integrating affective engagement strategies with differentiated instruction to enhance oral proficiency in EFL secondary contexts.
Co-Authors ., Suprawikno Abdul Azis Abdul Fadlil Achmad Furqon Nur Fitriadhi Adhika Pramita Widyassari Agung D.N.P, Muhammad Aji, Doni Kurnia Al Hadi, Fahreza Amrozi, M Ali Anang Widianto Aprilia, Dyah Ayu Safitri Aris Rakhmadi Astika AyuningTyas, Astika Ayu, Anggi Mutia Bambang Haryoko Carreon, Jonathan Rante Devi Tiana Kartikasari Dwi Purnomo Putro Eka Y, Sandy Pramudya Endang Kurniawati, Endang Eva Hertnacahyani Herraprastansi Fachry Abda El Rahman Figo SW, Denni Ghifari, Muhammad Al Gunawan, Helmi Hamzah, Fahmi Aliefuddin Helmi Gunawan Hertnacahyani, Eva Imam Riadi Indra Gunawan Indradewa, Rhian Joko Handoyo Korawan, Agus Dwi Kuncoro, Bagus Tri Lastoni Wibowo Lies Indriyatni Mahdum, Esa Adistiya Fajarwati Masuri, Masuri Maziyah, Hilda Nur Mohamad Ardy An’syah Muchlas Muchlas Mudjijanto, Mudjijanto Muhammad Abdimas Khalifuddin Nagari, Bintang Putra Nugraha, Anung Satria Nur Azizah Puput Eka Suryani Putro, Dwi Purnomo Rahmasari, Nagita Ratna Dwi Rahayu Rochmadi, Tri Safiq Rosad Salsabilla, Dea Sarmini Setiawan, David Harry Shofia, Aina Subkan, Muhamad Nur Sulistiyo, Yogi Sunardi Sunardi suryani, puput eka Suryanto, Hendri Suryanto, Hendri Sushananto W, Denni Figo Sutriyani, Wulan Teguh Adi Saputro Teguh Yuwono Wiranti, Dwiana Asih