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All Journal Jurnal Teknik Informatika (JUTIF) Jurnal As-Syar’i: Jurnal Bimbingan & Konseling Keluarga Biodik: Jurnal Ilmiah Pendidikan Biologi
Nurhadi , Nurhadi
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Law, Crime, Criminology & Criminal Justice Social Sciences

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Belis Gading dalam Perkawinan Adat Lamaholot Desa Leworaja: Telaah Normatif Empiris dalam Perspektif Hukum Islam Insafiyah Lamablawa, Nurmata; Fakhrurazi, Fakhrurazi; Alfarisi, Usman; Zakaria, Endang; Nurhadi , Nurhadi; Fatmakartika, Rini; Yumna, Laila
As-Syar i: Jurnal Bimbingan & Konseling Keluarga  Vol. 5 No. 3 (2023): As-Syar’i: Jurnal Bimbingan & Konseling Keluarga
Publisher : Institut Agama Islam Nasional Laa Roiba Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47467/as.v5i3.9949

Abstract

This study examines the practice of ivory belis in Lamaholot traditional marriage in Leworaja Village, Lembata Regency, East Nusa Tenggara. Belis in the form of elephant ivory is a customary requirement that has social, cultural, and honorary values for Lamaholot women. However, this practice often burdens men economically and raises normative issues in the perspective of Islamic law which emphasizes the simplicity of dowry and the prohibition of burdening prospective husbands. This research uses a qualitative method with data collection techniques through in-depth interviews with traditional leaders, religious leaders, and local communities, as well as analysis of customary law documents and marriage fiqh. The results of the study show that ivory belis is seen as a symbol of self-esteem and kinship bonds, but in Islamic law this tradition cannot be positioned as a legal condition for marriage. Islam only requires a simple dowry which is the full right of the wife. Therefore, the practice of ivory belis requires reinterpretation in order to maintain the cultural values of the Lamaholot community while being in line with the principles of maqaṣid al-shari'ah which emphasizes convenience, justice, and benefits.    
Comparison of ANOVA and Chi-Square Feature Selection Methods to Improve Machine Learning Performance in Anemia Classification Annisa, Tiko Nur; Jasmir , Jasmir; Nurhadi , Nurhadi
Jurnal Teknik Informatika (Jutif) Vol. 6 No. 4 (2025): JUTIF Volume 6, Number 4, Agustus 2025
Publisher : Informatika, Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52436/1.jutif.2025.6.4.5017

Abstract

Anemia is a prevalent hematological condition marked by decreased hemoglobin concentration in the blood, which can lead to serious health complications if undetected. Although machine learning has shown potential in supporting early diagnosis, its effectiveness is often hindered by irrelevant or excessive features. This study investigates the impact of ANOVA and Chi-Square feature selection methods in improving the effectiveness of three distinct machine learning models algorithms, Naive Bayes, K-Nearest Neighbor (KNN), and Support Vector Machine (SVM) for anemia classification. Using a Kaggle dataset consisting of 15,300 instances and 25 features, the evaluation of each model was conducted with reference to its accuracy, precision, recall, and F1-score, both before and after applying feature selection. Experimental results show a substantial improvement in classification performance after feature selection, with the SVM + ANOVA combination achieving the highest accuracy of 94.61%. In contrast, models without feature selection performed below 90%, highlighting the need for appropriate feature reduction techniques. This study contributes a comparative analysis framework for medical data classification, emphasizing the role of statistical feature selection in optimizing model accuracy. Its novelty lies in demonstrating consistent performance improvement across algorithms using real-world anemia data and providing evidence that ANOVA and Chi-Square can significantly enhance model generalization in medical diagnostic contexts.
Pengembangan LKPD Materi Klasifikasi Makhluk Hidup Diintegrasikan Dengan Discovery Learning Kelas VII SMP : (Development of LKPD Material on Classification of Living Things Integrated With Discovery Learning Class VII SMP) Yulia Saputri, Intan; Nurhadi , Nurhadi; Mardhiah Zural, Mimin
BIODIK Vol. 12 No. 02 (2026): June 2026 (inprogress)
Publisher : Program Studi Pendidikan Biologi FKIP Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biodik.v12i02.47984

Abstract

This research was motivated by the difficulties faced by seventh-grade students at SMPN 1 Lubuk Sikaping in understanding the classification of living things due to the heavy memorization of scientific terms and the limitations of existing student worksheets (LKPD). This study aimed to develop a valid, practical, and effective LKPD based on the Plomp development model for the topic of Classification of Living Things. Data collection instruments included needs analysis questionnaires, validation sheets, practicality questionnaires, and assessment instruments for attitudes and knowledge. Data were analyzed using descriptive percentages. The results of the preliminary investigation stage indicated a high demand for innovative teaching materials. In the prototyping stage, the LKPD was evaluated as highly valid (94.55%) by experts and highly practical through one-to-one trials (90.28%) and small group trials (89.02%). In the assessment stage, the LKPD proved highly user-friendly for teachers (96.98%) and students (87.86%), and demonstrated excellent effectiveness in the attitude (97.43%) and knowledge (100%) domains. Based on these findings, the developed LKPD meets the quality criteria for educational materials and is highly recommended for optimizing students' conceptual understanding and learning outcomes. Abstrak. Penelitian ini dilatarbelakangi oleh kesulitan peserta didik kelas VII SMPN 1 Lubuk Sikaping dalam memahami materi klasifikasi makhluk hidup karena banyaknya hafalan istilah ilmiah dan keterbatasan LKPD yang digunakan. Penelitian ini bertujuan untuk menghasilkan LKPD berbasis model pengembangan Plomp pada materi Klasifikasi Makhluk Hidup yang valid, praktis, dan efektif. Instrumen pengumpulan data meliputi angket analisis kebutuhan, lembar validasi, lembar kepraktisan, serta instrumen penilaian sikap dan pengetahuan. Data dianalisis secara deskriptif persentase. Hasil penelitian tahap investigasi awal menunjukkan tingginya kebutuhan akan bahan ajar inovatif. Pada tahap pembentukan prototipe, LKPD dinilai sangat valid (94,55%) oleh ahli dan sangat layak/praktis melalui uji one-to-one (90,28%) serta small group (89,02%). Pada tahap penilaian, LKPD terbukti sangat mudah digunakan oleh guru (96,98%) dan peserta didik (87,86%), serta memiliki efektivitas yang sangat tinggi pada aspek sikap (97,43%) dan aspek pengetahuan (100%). Berdasarkan temuan ini, LKPD yang dikembangkan memenuhi kriteria kelayakan kualitas bahan ajar dan sangat direkomendasikan untuk digunakan dalam mengoptimalkan pemahaman konsep serta hasil belajar peserta didik pada materi klasifikasi makhluk hidup.
Co-Authors Alfarisi, Usman Annisa, Tiko Nur Fakhrurazi, Fakhrurazi Fatmakartika, Rini Insafiyah Lamablawa, Nurmata Jasmir , Jasmir Laila Yumna Mardhiah Zural, Mimin Yulia Saputri, Intan Zakaria, Endang