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All Journal Jurnal Menssana Edusainstika: Jurnal Pembelajaran MIPA Terang: Jurnal Kajian Ilmu Sosial, Politik dan Hukum
Ali Umar
Unknown Affiliation
Biochemistry, Genetics & Molecular Biology Chemistry Education Law, Crime, Criminology & Criminal Justice Mathematics Physics Social Sciences Other

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Studi Kemampuan Motorik Siswa kelas V Sekolah Dasar Negeri 03 Ikur Koto Kecamatan Koto Tangah Yulifri Yulifri; Nurini Nurini; Arie Asnaldi; Ali Umar
Jurnal MensSana Vol 4 No 2 (2019): Jurnal MensSana
Publisher : Pusat Kajian Pendidikan Olahraga, Kesehatan, dan Rekreasi Jurusan Pendidikan Olahraga Fakultas Ilmu Keolahragaan Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jm.v4i2.98

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan motorik siswa Sekolah Kelas V Dasar Negeri 03 Ikur Koto Kecamatan Koto Tangah. Penelitian ini merupakan penilitian deskriptif. Populasi dalam penelitian ini adalah seluruh siswa Sekolah Dasar Negeri 03 Ikur Koto Kecamatan Koto Tangah,yangberjumlah 150 orang, terdiri dari siswa putra 80 orang dan putri 70 orang. Sampel penelitian ini adalah siswa kelas V Sekolah Dasar Negeri 03 Ikur Koto Kecamatan Koto Tangah dengan jumlah 35 siswa. Instrumen penelitian ini yang meliputi: standing board jump, softball throw, wall pass, lari zig-zag, dan lari jarak pendek 40 yard.Teknik analisis data pada penelitian ini adalah deskriptif kuantitatif dengan presentase.Hasil penelitian ini menunjukkan bahwa kemampuan motorik siswa Sekolah Dasar Negeri 03 Ikur Koto Kecamatan Koto Tangah berkategori baik sekali sebesar 8.57% (3 siswa), berkategori baik sebesar 22.86% (8 siswa), berkategori sedang sebesar 40% (14 siswa), berkategori kurang sebesar 20% (7 siswa), dan berkategori kurang sekali sebesar 8.57% (3 siswa).
Kedudukan dan Tantangan Pembuktian Deepfake Evidence dalam Sistem Peradilan Pidana Indonesia Ali Umar
Terang : Jurnal Kajian Ilmu Sosial, Politik dan Hukum Vol. 3 No. 1 (2026): Maret : Terang : Jurnal Kajian Ilmu Sosial, Politik dan Hukum
Publisher : Asosiasi Peneliti dan Pengajar Ilmu Hukum Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/terang.v3i1.1692

Abstract

The development of artificial intelligence has given rise to deepfake technology capable of realistically manipulating audio and visual content, thereby creating new challenges within Indonesia’s criminal evidentiary system. This study aims to analyze the legal position of deepfake evidence as electronic evidence and the challenges associated with its use in Indonesian criminal procedural law. The research employs a normative legal method using statutory and conceptual approaches. The findings indicate that electronic evidence has been recognized under the New Criminal Procedure Code and the Law on Electronic Information and Transactions; however, there are still no specific regulations governing the authentication of deepfake evidence. The ability of deepfake technology to produce highly convincing audiovisual manipulations makes the evidentiary process heavily dependent on scientific digital forensic examinations. In addition, limited facilities, inadequate human resources, and the absence of uniform authentication standards constitute major obstacles in law enforcement practices. Therefore, specific regulations, stronger digital forensic capabilities, and enhanced capacity of law enforcement officers are necessary to ensure legal certainty and the protection of human rights within criminal justice processes in the digital era.  
Analisis Self-efficacy Matematis Peserta Didik dalam Problem-based learning di SMPN 3 Sungai Tarab Desri Rahmah Putri; Isra Nurmai Yenti; Dona Afriyani; Ali Umar
Edusainstika Vol 6 No 1 (2026)
Publisher : Universitas Islam Negeri Mahmud Yunus Batusangkar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31958/je.v6i1.16849

Abstract

Mathematical self-efficacy is essential for learning mathematics because students’ beliefs about their abilities influence how they approach problems, persist through difficulties, and interpret success and failure. This study aims to describe the effect of Problem-Based Learning (PBL) on the mathematical self-efficacy of eighth-grade students at SMPN 3 Sungai Tarab. The study employed a qualitative descriptive design, in which questionnaire percentages served as categorical descriptors rather than a basis for statistical hypothesis testing. Eighteen students were purposively selected after completing one semester of PBL. Data were collected through methodological and source triangulation using a mathematical self-efficacy questionnaire (Cronbach’s alpha = 0.924), participatory observation, and in-depth interviews. Students’ mathematical self-efficacy in the PBL setting was categorized as high, with average percentages of 69.3% from the questionnaire and 64.1% from the observations. PBL most strongly developed dimensions closely related to its learning activities, namely positive and constructive attitudes (71%) and emotional stability (71%), fostered through collaborative problem-solving and viewing mistakes as part of learning, followed by applicative ability (68%). The lowest score was found in inherent motivation (67%), indicating that while PBL effectively strengthened students’ confidence in completing classroom tasks, it had not fully promoted self-directed learning beyond the classroom. Overall, the findings suggest that PBL effectively enhances mathematical self-efficacy at the task level, while self-directed learning remains an area for further improvement. Collaborative learning, contextual problems, appropriate teacher guidance, and motivation were identified as key supporting factors.
Co-Authors Arie Asnaldi Desri Rahmah Putri Dona Afriyani Isra Nurmai Yenti Nurini Nurini Yulifri