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All Journal JURNAL SAINS PERTANIAN EQUATOR Empathy : Jurnal Fakultas Psikologi Jurnal Al Bayan: Jurnal Jurusan Pendidikan Bahasa Arab LISANIA Jurnal Ilmu dan Pendidikan Bahasa Arab Indonesian Journal of Urology Jurnal Inovasi Teknologi Pendidikan Lisanuna: Jurnal Ilmu Bahasa Arab dan Pembelajarannya Englisia Journal EL-IDARE: JURNAL MANAJEMEN PENDIDIKAN ISLAM Cosmogov: Jurnal Ilmu Pemerintahan Sulesana Jurnal Politik Profetik Jurnal Ilmiah Pendidikan Pancasila dan Kewarganegaraan Teras Jurnal Jurnal Pengembangan Teknologi Informasi dan Ilmu Komputer Arabi : Journal of Arabic Studies Al-Jinayah: Jurnal Hukum Pidana Islam Politik Indonesia: Indonesian Political Science Review Indonesian Journal of Obstetrics and Gynecology (Majalah Obstetri dan Ginekologi Indonesia) Al Mi’yar: Jurnal Ilmiah Pembelajaran Bahasa Arab dan Kebahasaaraban Journal of Communication Sciences (JCoS) Al Hurriyah : Jurnal Hukum Islam JURNAL LENSA MUTIARA KOMUNIKASI Syntax Idea Vocatech : Vocational Education and Technology Journal JURNAL EKONOMI SYARIAH Dakwatuna: Jurnal Dakwah dan Komunikasi Islam Tahdis: Jurnal Kajian Ilmu Al-Hadis BUSTANUL FUQAHA: Jurnal Bidang Hukum Islam JURNAL TEKNIK SIPIL UNAYA Lahjah Arabiyah: Jurnal Bahasa Arab dan Pendidikan Bahasa Arab Primatika : Jurnal Pendidikan Matematika EL-MAQALAH: Journal of Arabic Language Teaching and Linguistics Jurnal Acitya Ardana: Jurnal Keuangan Negara dan Kebijakan Publik Journal Of Human And Education (JAHE) International Journal of Public Health Excellence (IJPHE) Jurnal Politik Al Hurriyah : Jurnal Hukum Islam Borneo Journal of Islamic Education Jurnal Riset Hukum, Ekonomi Islam, ekonomi, Manajemen dan Akuntansi KOLONI Khulasah : Islamic Studies Journal Journal of Planning and Research in Civil Engineering Komsospol USRATY : Journal of Islamic Family Law Al Iidara Balad : Jurnal Administrasi Negara Paradigma Journal of Administration Jurnal Ilmu Komunikasi Jurnal Pendidikan Progresif JIKUM: Jurnal Ilmu Komputer Interdisciplinary Explorations in Research Journal (IERJ)
Muhammad Ridha
Department of Urology, Faculty of Medicine/Airlangga University, Soetomo Hospital, Surabaya.
Religion Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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Implementasi Steganografi Multi-File Menggunakan Metode Metadata PNG untuk Keamanan Data Multimedia Ridha, Muhammad; Alfarizy, Renald; Mabrur, Muhammad Arif; Alfarisi, Salman
JIKUM: Jurnal Ilmu Komputer Vol. 2 No. 2 (2026): JIKUM: Jurnal Ilmu Komputer, November 2026
Publisher : LEMBAGA KAJIAN PEMBANGUNAN PERTANIAN DAN LINGKUNGAN (LKPPL)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62671/jikum.v2i2.170

Abstract

The rapid growth of digital multimedia increases the risk of unauthorized access and data leakage, requiring effective techniques to enhance data security. Steganography is one approach that conceals information within digital media to prevent detection. This research aims to implement a multi-file steganography system using the PNG metadata method to secure multimedia data. The proposed approach embeds multiple files into the metadata section of PNG images without altering the visual quality of the carrier image, thereby maintaining imperceptibility. The methodology involves analyzing PNG metadata structures, designing an embedding and extraction mechanism for multiple files, and implementing the system using a software-based approach. Experimental results demonstrate that the proposed method is capable of securely embedding and extracting multiple files while preserving image integrity and file authenticity. The use of PNG metadata provides sufficient capacity and flexibility for multi-file steganography, making it suitable for secure multimedia data storage and transmission. Overall, the proposed implementation shows that metadata-based steganography can be an effective and efficient solution for enhancing multimedia data security.
Pengaruh Penambahan Serat Abaka Dan Substitusi 5% Abu Cangkang Tiram Dalam Menghasilkan Kuat Tarik Beton Mutu Tinggi Bunyamin, Bunyamin; Isnaini, Isnaini; Pramanda, Heru; Ridha, Muhammad
VOCATECH: Vocational Education and Technology Journal Vol 7, No 2 (2025): December
Publisher : Akademi Komunitas Negeri Aceh Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.38038/vocatech.v7i2.244

Abstract

AbstractAbaca fiber is a natural reinforcement material with potential to improve the tensile performance of concrete. However, its application in high-strength concrete is often hindered by fiber agglomeration, and studies on its use in such concrete remain limited. This research investigates the effect of incorporating abaca fiber in combination with 5% Oyster Shell Ash (OSA) as a partial cement replacement on the splitting tensile strength of high-strength concrete. Concrete specimens (100 mm × 200 mm cylinders) were prepared with abaca fiber contents of 0.15%, 0.30%, and 0.45% by weight of cement. The OSA was sourced from Krueng Neng, Aceh Besar, while the abaca fiber was obtained from East Java, Indonesia. The mix design followed ACI 211.4R-93 guidelines and ASTM testing standards, targeting a compressive strength of 9000 psi (≈ 62 MPa). After 28 days of water curing, results showed that the lowest splitting tensile strength was recorded for normal concrete (6.81 MPa), while the highest value was obtained for the mix containing 5% OSA and 0.30% abaca fiber (8.87 MPa). These findings indicate that the synergy between OSA and optimal abaca fiber content can significantly enhance the tensile performance of high-strength concrete.Keywords:Oyster shell ash; abaca fiber; concrete high strength; splitting tensile strengthAbstrakSerat abaka merupakan material penguat alami yang berpotensi meningkatkan kinerja tarik beton. Namun, penerapannya pada beton mutu tinggi sering terkendala oleh penggumpalan serat, dan kajian terkait penggunaannya pada beton mutu tinggi masih terbatas. Penelitian ini bertujuan untuk mengetahui pengaruh penambahan serat abaka yang dikombinasikan dengan 5% Abu Cangkang Tiram (ACT) sebagai pengganti sebagian semen dalam menghasilkan kuat tarik belah beton mutu tinggi. Benda uji berupa silinder berukuran 100 mm × 200 mm dibuat dengan variasi kadar serat abaka sebesar 0,15%, 0,30%, dan 0,45% dari berat semen. ACT diperoleh dari Krueng Neng, Aceh Besar, sedangkan serat abaka berasal dari Jawa Timur, Indonesia. Perancangan campuran mengacu pada pedoman ACI 211.4R-93 dan standar pengujian ASTM, dengan mutu rencana sebesar 9000 psi (≈ 62 MPa). Setelah perendaman selama 28 hari, hasil pengujian menunjukkan bahwa kuat tarik belah terendah diperoleh pada beton normal (6,81 MPa), sedangkan nilai tertinggi dicapai pada campuran dengan 5% ACT dan 0,30% serat abaka (8,87 MPa). Temuan ini memperlihatkan bahwa kombinasi ACT dan kadar serat abaka yang optimal dapat secara signifikan meningkatkan kinerja tarik beton mutu tinggi.Kata Kunci:Abu cangkang tiram; serat abaka; beton mutu tinggi; kuat tarik
ETIKA BISNIS ISLAM DAN KEADILAN DISTRIBUTIF: TINJAUAN FILOSIFIS TERHADAP EKSPLOITASI HARGASAAT DARURAT BENCANA Ridha, Muhammad
HEI EMA : Jurnal Riset Hukum, Ekonomi Islam, Ekonomi, Manajemen dan Akuntansi Vol. 5 No. 1 (2026): Januari
Publisher : Prodi Hukum Ekonomi Syariah, STI Syariah AL-Hilal SIgli

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61393/heiema.v5i1.494

Abstract

The practice of unnaturally increasing the price of basic necessities during a disaster is an economic phenomenon that often occurs in Indonesia. This research aims to analyze the practice from the perspective of Islamic law, especially through the concepts of ihtikar (hoarding) and tas'ir (pricing). Using qualitative research methods with a juridical-normative approach, this study evaluates how Islamic economic morality responds to market exploitation in the midst of a humanitarian crisis. The results of the study show that the price increase driven by the motive of speculation and the use of legal emergency conditions is haram, because it violates the principle of la darar wa la dirar (not to harm oneself and others). Although under normal conditions the price is determined by the market mechanism, the state has the authority to intervene in prices (tas'ir) to protect the public interest (maslahah mursalah) when there is a market distortion due to a disaster. This article concludes that the enforcement of Islamic business ethics is not only a matter of formal legality, but also about maintaining a balance between the rights of individual traders and the right of life of the masses. This research contributes to strengthening market regulation based on human values and distributive justice in sharia economic law.
Studi kasus kesulitan siswa dalam mengonstruksi model matematika pada materi SPLDV Ridha, Muhammad; Khairunnisa, Khairunnisa
Primatika : Jurnal Pendidikan Matematika Vol. 14 No. 2 (2025)
Publisher : Program Studi Pendidikan Matematika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mulawarman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30872/primatika.v15i1.5458

Abstract

Penelitian ini mengkaji secara mendalam kesulitan yang dialami siswa kelas IX dalam mengonstruksi model matematika untuk soal cerita pada materi Sistem Persamaan Linear Dua Variabel (SPLDV). Melalui pendekatan kualitatif dengan desain studi kasus, data dikumpulkan menggunakan tes tertulis dan wawancara mendalam terhadap partisipan yang dipilih secara purposive sampling. Temuan utama menunjukkan bahwa kesulitan fundamental siswa tidak terletak pada pemahaman literal teks, melainkan pada tahap matematisasi, yakni kegagalan mentransformasikan informasi naratif menjadi sistem persamaan yang valid. Analisis lebih lanjut mengidentifikasi tiga akar masalah: (1) hambatan epistemologis yang berkaitan dengan pemahaman sifat abstrak aljabar; (2) hambatan didaktis akibat dominasi pengajaran prosedural; dan (3) faktor psikologis seperti kecemasan terhadap matematika. Sebagai implikasi, penelitian ini merekomendasikan pergeseran paradigma pedagogis menuju pembelajaran kontekstual (CTL) yang berfokus pada pemodelan, integrasi teknologi sebagai jembatan kognitif, serta penguatan dukungan sistemik melalui asesmen berbasis proses dan pengembangan profesional guru yang berkelanjutan.
Co-Authors A. Samad, Baihaqi Abdullah Abdullah Abdullah, Muhammad Farhan Adi Saputra, Ricki Fahma Ahmad Juhaidi Alfarizy, Renald Alfiansyah, Oki Almaura Azkia Amalia Amalia Amelia Ramadhani Amrullah Amrullah Ananda, Dea Andriyaldi, Andriyaldi Aprillia, Refi Arfah, Kaya Arien, Wilasari Aryo Pinandito Ashila, Muna Askar Patahuddin Azkia Muharom Albantani Bamba, Mishel Berkatillah, Akhmad Berliana Irianti, Berliana Buhori Muslim Bunyamin Bunyamin Dahril Deliana, Deliana Delly Mustafa Desril Astiani Doddy M. Soebadi Efendy, Noor Effendy, Amalia Ema Pratiwi, Ema Fadhilurrozaq, Muhammad Fahmi Mohmmad Zain Faisal Rahman Fajar Pradana Fharisi, Muhammad Fitri, Anisa Furqan Hidayatullah Hafid, Andi Muh. Ahsan A. Harizi, Hasvi Hasibuan, Pendi Hendri Hendri Hendrifa, Nesri Humaira, Siti Ikhwan, Haznur Indra Saputra Ishara, Zahrani Athaya Islamy, M Irfan Islamy, M. Irfan Islamy, Muhammad Irfan Ismy, Jufriady Isnaini Isnaini Israyati, Nur Iswandi Iswandi Johan Renaldo Joharis, M. Jumadi Jumadi Jumaida, Siti Aisyah Khairunnisa Khairunnisa Khalilullah, Said Alfin Kustiawan, Winda Liva Maita, Liva Mabrur, Muhammad Arif Mahfuzah, Siti Mardhatillah, Liza Safira Marzuki, Raudhah Maulana, Fikri Fadhil Mauny, Muhammad Puteh Mega, T. Fadlon Mensa , Dolfi Firdaus Mira, Asari Mista Muh. Natsir, Muh. Muhammad Khalis, Muhammad Muhammad Kusasi, Muhammad Muhammad Ridha Muhammad Taufan Djafri Muliana, Adam Muthia Umi Setyoningrum Nofri Andy.N Pamungkas, Wicaksana Permata, Dhea Pramanda, Heru Putri, Naila Amalia Rakha, Maulana Nayif Raudah Raudrina, Yessy Reza Maulana Ridha Fadillah Ridha, Sofia Riwanda, Agus Rohman, Hilma Fanniar Rubino rubino, rubino Rusuly, Usfiyatur Salami Mahmud Salman Alfarisi Sari, Dini Ratna Sari, Ria Harnita Setia Budi Setiawati, Sandy Shafira Shafira, Shafira Silviana, Mery Slamet Riyadi Solly Aryza Suhaimi Suhaimi Sulaimon, Jamiu Temitope Sunaryo Hardjowijoto Syafni, Hafidhah Syahminan Syahminan Syahputra, Ichsan Syaiful Mustofa Syamsuddin Maldun Syarifuddin Hasyim Tarmizi Ninoersy Taufik Rahman Tety Sriana Triyaka, Rendy Ulfiyah, Ainun Ridha Ulqatari, Delvi Warniati, Linda WASI'AN, WASI'AN Zardi, Muhammad