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All Journal Jurnal Matematika dan Statistika serta Aplikasinya (Jurnal MSA) Journal of Natural Sciences and Mathematics Research Jurnal Matematika UNAND Jurnal Diferensial LOSARI: Jurnal Pengabdian Kepada Masyarakat ARRUS Jurnal Pengabdian Kepada Masyarakat Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat (JHP2M) Journal of Mathematics, Computation and Statistics (JMATHCOS) Journal of Mathematics, Statistics, and Applications Limits: Journal of Mathematics and Its Applications
Yusuf Ramadana
Universitas Negeri Makassar
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Health Professions Languange, Linguistic, Communication & Media Library & Information Science Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Transportation Other

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On The Boundedness Properties of the Generalized Fractional Integrals on the Generalized Weighted Morrey Spaces Ramadana, Yusuf
Journal of Mathematics, Computations and Statistics Vol. 5 No. 2 (2022): Volume 05 Nomor 02 (Oktober 2022)
Publisher : Jurusan Matematika FMIPA UNM

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

Abstract

Morrey Spaces were first introduced by C.B. Morrey in 1938. Morrey space can be considered as a generalization of the Lebesgue spaces. Morrey spaces were then generalized become the generalized Morrey spaces, the weighted Morrey spaces, and the generalized weighted Morrey spaces. One of the studies on Morrey spaces is the boundedness of certain operators on the spaces. One of the operators is the fractional integral. The boundedness of fractional integrals on the classical Morrey spaces, the weighted Morrey spaces, the generalized Morrey spaces, and the generalized weighted Morrey spaces had been known. One of the extensions of fractional integrals is generalized fractional integral. The operator was bounded on the generalized Morrey spaces. The purpose of this study is to investigate the boundedness of generalized fractional integrals on the generalized weighted Morrey spaces. The weight used is Muckenhoupt class. The results obtained show that the generalized fractional integral is bounded from generalized weighted Morrey space to another generalized weighted Morrey space under some assumptions. The main result obtained then implies the boundedness of the generalized fractional maximal operator on generalized weighted Morrey spaces under the same assumptions.
Pendampingan Persiapan ON-MIPA PT 2024 Bidang Matematika bagi Mahasiswa Universitas Fajar Mas'ud, Syamsuddin; Izzulhaq, Agung; Saputra, Andika; Ramadana, Yusuf
ARRUS Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 1 (2025)
Publisher : PT ARRUS Intelektual Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.abdiku3971

Abstract

ONMIPA-PT merupakan salah satu kompetisi ilmiah tingkat nasional. ONMIPA-PT melibatkan beberapa bidang dan di antaranya adalah Matematika. Soal-soal pada kompetisi tersebut merupakan soal non-rutin dan lebih mendalam dibandingkan soal pada buku teks standar. Oleh karena itu, perlu adanya pendampingan sebelum mengikuti ONMIPA-PT terlebih bahwa Universitas Fajar belum memiliki program studi Matematika. Kegiatan pendampingan persiapan ONMIPA-PT diikuti oleh 3 orang perwakilan mahasiswa dan didampingi oleh dua orang mentor. Pendampingan dilaksanakan dalam dua bagian, yaitu bagian pertama yang dilakukan secara offline di kampus Universitas Fajar dan secara online melalui aplikasi google meet. Pendampingan bertujuan untuk menambah dan memaksimalkan pengetahuan, pemahaman, dan pengalaman atas materi terkait untuk mengikuti ONMIPA-PT. Materi yang diajarkan pada pendampingan ini berfokus pada materi Kombinatorik dan Aljabar Linear yang merupakan dua dari lima materi yang diujikan pada kompetisi ini. Hasil kegiatan pendampingan menunjukkan adanya peningkatan pemahaman mahasiswa terhadap materi yang dikompetisikan. Meski demikian, belum ada perwakilan yang lolos ke tingkat nasional.
Komutator Operator Calderón-Zygmund Diperumum tipe-Teta pada Ruang Morrey Berbobot Diperumum: Komutator pada Ruang Morrey Berbobot Diperumum Ramadana, Yusuf; Syamsuddin Mas'ud
Jurnal MSA (Matematika dan Statistika serta Aplikasinya) Vol 13 No 1 (2025): VOLUME 13 NO 1 TAHUN 2025
Publisher : Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/msa.v13i1.56052

Abstract

In this paper, we conduct a comprehensive study on the boundedness properties of commutators generated by a BMO function and generalized Calderón-Zygmund operator. Specifically, we analyze their mapping behavior from a generalized weighted Morrey space to another generalized weighted Morrey spaces under some conditions on the parameters. Our main objective is to establish novel and refined conditions on the pair of parameter functions that guarantee the boundedness of these commutators on the spaces. The findings presented in this work contribute to a deeper understanding of the interplay between function spaces, weight conditions, and the structure of commutators in harmonic analysis.
Optimalisasi Manajemen Inventori melalui Pelatihan dan Peningkatan Kemampuan Memanfaatkan Olsera dalam Pencatatan Stok Barang pada UMKM secara Online Mas'ud, Syamsuddin; Ramadana, Yusuf
LOSARI: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2025): Juni 2025
Publisher : LOSARI DIGITAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53860/losari.v7i1.473

Abstract

Inventory data inaccuracy is a common issue faced by many UMKM, especially those operating in the food and beverage (F&B) industry. One effective solution to address this problem is implementing proper inventory management using digital tools such as the Olsera application. This community service project aimed to optimize inventory management by providing training and improving employees' skills in using Olsera for inventory recording. The project was carried out in four stages: discussions with the partner, preparation, training implementation, and monitoring and evaluation. As a result of these activities, the partner’s ability to use Olsera improved significantly, a standardized inventory recording process was established, and inventory data inaccuracies were reduced.
Workshop Pengembangan dan Pemanfaatan Media Pembelajaran Virtual Berbasis Aplikasi Worldwall bagi Guru untuk Meningkatkan Kemampuan Literasi dan Numerasi Siswa TK Side, Syafruddin; Abdy, Muhammad; Ramadana, Yusuf
Jurnal Hasil-Hasil Pengabdian dan Pemberdayaan Masyarakat Vol. 4 No. 2 (2025): Volume 04 Nomor 02 (Oktober 2025)
Publisher : Jurusan Matematika FMIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/jhp2m.v4i2.9680

Abstract

Literasi dan numerasi merupakan kompetensi dasar yang sangat penting untuk ditanamkan sejak usia dini sebagai bekal anak dalam menghadapi masa depan. Proses pembelajaran kedua aspek ini membutuhkan perhatian khusus, salah satunya melalui pemanfaatan media pembelajaran berbasis virtual. Kegiatan pengabdian masyarakat ini dilaksanakan dengan tujuan untuk meningkatkan pemahaman guru TK mengenai literasi dan numerasi, sekaligus memberikan pengetahuan serta pengalaman praktis dalam mengembangkan media pembelajaran virtual yang relevan dengan materi tersebut. Workshop ini dilaksanakan di TK Bunga Asya dan melibatkan enam orang guru sebagai peserta. Hasil kegiatan menunjukkan bahwa seluruh guru peserta (100%) mengalami peningkatan pemahaman tentang literasi dan numerasi. Selain itu, mereka juga mampu mengembangkan sekaligus mengintegrasikan media pembelajaran virtual ke dalam kegiatan pembelajaran di kelas, sehingga mendukung upaya peningkatan kualitas pembelajaran di TK.
ON THE BOUNDEDNESS PROPERTIES OF MIKHLIN OPERATOR ON GENERALIZED MORREY SPACES Ramadana, Yusuf; Rosali, Dwi Fitriani
JURNAL DIFERENSIAL Vol 5 No 2 (2023): November 2023
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v5i2.12400

Abstract

In this paper we investigate the boundedness of Mikhlin perators on generalized Morrey spaces. Theresults show that the operators are bounded on generalized Morrey spaces under some assumptions.
Some Conditions for the Boundedness of Commutators of Fractional Integrals on Generalized Weighted Morrey Spaces Ramadana, Yusuf
JURNAL DIFERENSIAL Vol 7 No 1 (2025): April 2025
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v7i1.19996

Abstract

In this paper, we investigate the boundedness of commutators generated by $b\in BMO$ and fractional integrals $I_\alpha$ from $\mathcal{M}_{\psi_1}^{p,w^p}$ to $\mathcal{M}_{\psi_2}^{q,w^q}$ for $1<p<q<\infty$. We obtain some new conditions for the pair $(\psi_1,\psi_2)$ of the functions $\psi_1$ and $\psi_2$ on $\mathbb{R}^n\times (0,\infty)$ that ensure the boundedness properties.
Pendampingan Persiapan OSN Matematika 2025 bagi Siswa dan guru SMP pada materi Aljabar Yusuf Ramadana; Syamsuddin Mas’ud; Rahmat Hidayat; Andika Saputra; Rahman, Muhammad Syarifuddin
ARRUS Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2025)
Publisher : PT ARRUS Intelektual Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35877/454RI.abdiku3978

Abstract

Olimpiade Sains Nasional (OSN) tingkat Sekolah Menengah Pertama (SMP) merupakan ajang kompetisi ilmiah yang menuntut penguasaan konsep matematika secara mendalam serta kemampuan berpikir kritis dan analitis. Untuk mendukung peningkatan kualitas peserta dari wilayah Sulawesi Selatan, telah dilaksanakan kegiatan pendampingan persiapan OSN 2025 pada bidang Matematika untuk materi Aljabar. Tujuan kegiatan ini adalah untuk memperkuat pemahaman materi, melatih keterampilan problem solving, serta membekali guru pembimbing dengan strategi pembinaan yang efektif. Kegiatan dilaksanakan secara daring melalui platform Zoom pada tanggal 31 Mei 2025 dan diikuti oleh 23 peserta yang terdiri atas siswa dan guru pembimbing dari berbagai sekolah. Pendampingan berlangsung dalam dua sesi, masing-masing berdurasi dua jam, dengan materi disampaikan oleh mentor berpengalaman. Hasil kegiatan menunjukkan bahwa peserta cukup memahami materi yang disampaikan, meskipun interaksi berupa pertanyaan masih terbatas. Kendati demikian, keterlibatan peserta tetap aktif, terlihat dari respons terhadap kesalahan penulisan yang muncul selama sesi berlangsung. Kegiatan ini diharapkan dapat berkontribusi pada peningkatan kesiapan peserta menghadapi OSN serta mendorong keberlanjutan program pembinaan di daerah.
Morrey spaces in quantum theory: on regularity of the solution of Schrödinger equation via fractional maximal operators Ramadana, Yusuf
Journal of Natural Sciences and Mathematics Research Vol. 11 No. 1 (2025): June
Publisher : Faculty of Science and Technology, Universitas Islam Negeri Walisongo Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21580/jnsmr.v11i1.25521

Abstract

In this paper, we investigate the regularity conditions of solutions of Schrödinger Equations with forcing function in the framework of generalized weighted Morrey spaces. We utilize the established boundedness of the fractional maximal operator on generalized weighted Morrey spaces. We prove that if the forcing function does not balance local regularity and global decay, then the solution of the equation does not do so either.
Schrödinger-type Equation with the Data in Morrey Spaces Yusuf Ramadana
Journal of Mathematics, Statistics and Applications Vol. 2 No. 1 (2025): Mei
Publisher : PT. Lontara Digitech Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61220/

Abstract

In this paper we investigate the regularity properties of Schrödinger-type equations with the data in certain Morrey spaces. Under some assumptions, we obtain that if the data is not in certain Morrey space, then the solution is also not in certain Morrey spaces. Hence, if the data which acts on the system does not balance local regularity and global decay, then the solution does not either.
Co-Authors Andika Saputra ANDIKA SAPUTRA Dwi Fitriani Rosali Izzulhaq, Agung Muhammad Abdy Muhammad Syarifuddin Rahman Rahmat Hidayat Rosali, Dwi Fitriani Syafruddin Side Syamsuddin Mas'ud Syamsuddin Mas’ud