Article Per Year (5 Year)
p-Index From 2021 - 2026
1.405
P-Index
This Author published in this journals
All Journal Jurnal Ecosolum Journal TEPAT: Teknologi Terapan untuk Pengabdian Masyarakat Jurnal Varian KNOWLEDGE: Jurnal Inovasi Hasil Penelitian dan Pengembangan VARIANSI: Journal of Statistics and Its Application on Teaching and Research Future Space: Studies in Geo-Education SMART: Jurnal Pengabdian Kepada Masyarakat
Ikhwana, Nur
Unknown Affiliation
Agriculture, Biological Sciences & Forestry Arts Astronomy Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

Published : 8 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 8 Documents
Search

 1 
Sandstone Provenance of Walanae Formation as a Parent Rock in Bulukumpa area, Bulukumba Regency, South Sulawesi: Provenance Batupasir Formasi Walanae sebagai Bahan Induk Tanah di Daerah Bulukumpa Kabupaten Bulukumba, Sulawesi Selatan Farida, Meutia; Burhan, Moh. Junaedy; Umar, Hamid; Imran, A M; Ikhwana, Nur; Ahmad, Asmita
Jurnal Ecosolum Vol. 12 No. 2 (2023): DESEMBER
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v12i2.31432

Abstract

The Walanae Formation has a wide distribution in the southern arm of Sulawesi, this rock formation was deposited during the formation of the basin due to the Walanae strike-slip fault. The Walanae Formation in the study area comprises sedimentary rocks and pyroclastic rocks, which give different soil characteristics. This study aims to determine the types of sandstones, rocks of origin, and provenance of sandstones in the study area by using spot sampling at representative stations and petrographic analysis. The sandstones of the study area are divided into two groups based on Folk (1974), namely arkose lithic and feldspathic litharenite. Based on the type of quartz, rock fragments, and associated minerals, the origin of the sandstones in the study area are plutonic igneous rocks, volcanic rocks, sedimentary rocks, and metamorphic rocks. The results show that the types of provenance sandstones in the study area are magmatic arc and recycled orogenic.
Strengthening rock analysis skills through petrology and petrography training for vocational school students majoring in Geology and Mining Engineering, Makassar City Farida, Meutia; Irfan, Ulva Ria; Maulana, Adi; Sirajuddin, Haerany; Alimuddin, Ilham; Umar, Hamid; Thamrin, Meinarni; ., Sahabuddin; ., Maulana; Ikhwana, Nur; Asfar, Suryawan
JURNAL TEPAT : Teknologi Terapan untuk Pengabdian Masyarakat Vol 6 No 2 (2023): Let us Collaborate for Community Issues
Publisher : Faculty of Engineering UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jurnal_tepat.v6i2.423

Abstract

Over the last 2 decades, the need for the application of geosciences has become increasingly in society, geological natural disasters have made various levels of society aware of the importance of knowledge and understanding of the geological conditions of the Indonesian Archipelago. One of the impacts is the increasing number of vocational schools and universities providing earth education. Therefore, a curriculum that includes "Earth Science" as part of its subjects is needed. Vocational High School (SMK) Applied Techno Aviation, Department of Geological and Mining Engineering, Makassar City produces employees who are ready to be deployed in the field to work as technicians, so adequate skills are required in rock identification. Therefore, this training aims to improve students' skills as initial in improving the quality of their introduction to minerals and rocks. The results of this training show a positive trend in student test results by 5% - 27% improving and strengthening student skills, especially in petrology and petrography, is necessary to develop student quality.
STUDI PUSTAKA TENTANG PERAN 10 KONSEP GEOGRAFI DALAM MENINGKATKAN LITERASI SPASIAL PESERTA DIDIK SYAMSUNARDI, SYAMSUNARDI; IKHWANA, NUR; SYAM, NUR
KNOWLEDGE: Jurnal Inovasi Hasil Penelitian dan Pengembangan Vol. 4 No. 4 (2024)
Publisher : Pusat Pengembangan Pendidikan dan Penelitian Indonesia (P4I)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51878/knowledge.v4i4.3945

Abstract

Spatial literacy is an essential ability to understand, analyze, and interpret spatial information to address global challenges such as climate change, urbanization, and environmental sustainability. This study aims to explore the role of the ten geographical concepts location, place, spatial interaction, movement, region, human-environment interaction, scale, pattern, process, and temporal change in enhancing students' spatial literacy. By employing a literature review method, relevant studies are critically analyzed to uncover the contribution of each concept in shaping students' spatial abilities. The findings indicate that mastering the ten geographical concepts plays a significant role in enriching geographical understanding and improving students' analytical skills. Inquiry-based learning strategies, the use of technologies such as Geographic Information Systems, and spatial data-based approaches have proven effective in enhancing spatial literacy. However, technological limitations, infrastructure challenges, and teacher competencies remain major obstacles in implementing these concepts in schools. This study recommends improving access to learning technologies and providing teacher training as key efforts to optimize geography education in fostering students' spatial literacy. ABSTRAKLiterasi spasial merupakan kemampuan esensial dalam memahami, menganalisis, dan menginterpretasikan informasi spasial untuk menjawab tantangan global seperti perubahan iklim, urbanisasi, dan keberlanjutan lingkungan. Kajian ini bertujuan mengeksplorasi peran sepuluh konsep geografi—lokasi, tempat, hubungan antar-ruang, gerak, wilayah, interaksi manusia-lingkungan, skala, pola, proses, dan perubahan waktu dalam meningkatkan literasi spasial peserta didik. Dengan menggunakan metode studi pustaka, literatur relevan dianalisis secara kritis untuk menggali kontribusi masing-masing konsep dalam membentuk kemampuan spasial peserta didik. Hasil studi menunjukkan bahwa penguasaan 10 konsep geografi berperan signifikan dalam memperkaya pemahaman geografis dan meningkatkan kemampuan analitis peserta didik. Strategi pembelajaran berbasis inkuiri, pemanfaatan teknologi seperti Sistem Informasi Geografis, dan pendekatan berbasis data spasial terbukti efektif dalam meningkatkan literasi spasial. Namun, keterbatasan teknologi, infrastruktur, dan kompetensi guru menjadi tantangan utama dalam implementasi konsep-konsep ini di sekolah. Penelitian ini merekomendasikan peningkatan akses teknologi pembelajaran dan pelatihan guru sebagai upaya optimalisasi pembelajaran geografi yang mendukung pengembangan literasi spasial peserta didik.
Integrating Geography Education and Sustainable Tourism: A SWOT-Based Approach at Galesong Beach, Indonesia Syamsunardi; Syarif, Erman; Nyompa, Sukri; Kajornsin, Boonreang; Ikhwana, Nur
Future Space: Studies in Geo-Education Vol. 1 No. 4 (2024): Future Space: Studies in Geo-Education
Publisher : CV Bumi Spasial

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69877/fssge.v1i4.43

Abstract

Enhancing the quality of education can be achieved by incorporating This study aims to be able to find out the potential contained in galesong beach beach tourism objects and the strategy of developing galesong beach attractions in Tamalate Village, North Galesong District, Takalar Regency. This type of research is mixed methods research, meaning research that can produce descriptive and statistical data both in written and oral form. The subjects of the study, the owners and managers of galesong beach tourism, the local community and the visitors. The data analysis involves SWOT analysis, which is used to assess both the internal strengths and weaknesses and the external opportunities and threats related to the development of Galesong Beach as a tourist destination. Data analysis techniques use SWOT analysis. The results indicate that Galesong Beach has a ‘worth visiting’ rating, with an evaluation score of 76.25%. This high score is attributed to the supporting elements of the destination, such as adequate accommodation, accessibility, facilities, and infrastructure, all of which enhance its attractiveness to tourists. The SWOT analysis places the Galesong Beach development strategy in Quadrant I, suggesting a Rapid Growth Strategy. This positioning indicates that Galesong Beach should focus on strategies to accelerate visitor growth, leveraging its strengths to capitalize on opportunities for rapid expansion. That is, Galesong Beach attractions are in a strategy to increase the growth rate of tourist visitors by using faster time.
Statistika Kategorik untuk Siswa: Meningkatkan Ketajaman Analisis dalam Karya Tulis Ilmiah Aswi, Aswi; Tiro, Muhammad Arif; Poerwanto, Bobby; Ikhwana, Nur; Rais, Zulkifli; Abidin, Muh. Zulkifli
SMART: Jurnal Pengabdian Kepada Masyarakat Vol 5, No 2 (2025): Oktober
Publisher : Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/smart.v5i2.77214

Abstract

Tujuan dari kegiatan ini adalah untuk meningkatkan kamampuan analisis data guru dan siswa SMAN 7 Takalar khususnya dalam mengolah dan menganalisis data kualitatif atau kategorik dalam menyusun karya tulis ilmiah. Kegiatan ini diikuti oleh 18 orang siswa. Pelaksanaan kegiatan ini dimulai dari observasi, identifikasi kebutuhan, pelatihan, pendampingan, serta monitoring dan evaluasi. Hasil dari kegiatan ini adalah peningkatan pengetahuan dan keterampilan pada topik yang dibahas. Selain itu, sekitar 83,33% peserta merasakan pengetahuan dan keterampilannya meningkat secara signifikan. Artinya kegiatan yang dilakukan memberikan dampak kepada peserta sehingga setelah narasumber meninggalkan lokasi kegiatan terjadi sharing ilmu antar peserta sehingga peserta yang belum banyak berkembang juga dapat memahami dan mengimplementasikan materi yang telah diberikan. Peningkatan keterampilan ini diharapkan dapat membantu siswa dalam penyusunan karya tulis ilmiah.
Penerapan Metode Kuadratik untuk Peramalan Banyaknya Penduduk Miskin di Sulawesi Selatan Tahun 2008-2025 Mangiri, Nalto Batty; Aidid, Muhammad Kasim; Ikhwana, Nur
VARIANSI: Journal of Statistics and Its application on Teaching and Research Vol. 7 No. 2 (2025)
Publisher : Program Studi Statistika Fakultas MIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/variansiunm436

Abstract

Masalah kemiskinan adalah masalah yang kompleks dan bersifat multidimensional atau saling berkaitan antara berbagai aspek diantaranya yaitu aspek sosial, ekonomi, dan budaya, serta aspek lainnya. Banyaknya penduduk miskin di Indonesia adalah 23,85 juta pada Maret 2025. Provinsi Sulawesi Selatan pada Maret 2025, terdapat kurang lebih 698,13 ribu penduduk miskin. Sebagai langkah pencegahan meningkatnya angka kemiskinan perlu dilakukan peramalan banyaknya penduduk miskin sehingga pemerintah dapat melakukan perencanaan kebijakan. Data yang digunakan pada penelitian ini adalah data tahun 2008-2025 yang bersumber dari Badan Pusat Statistik Provinsi Sulawesi Selatan. Penelitian ini menggunakan Analisis Trend Nonlinear khususnya Metode Kuadratik untuk melakukan peramalan banyaknya penduduk miskin. Metode ini cocok digunakan untuk data 10 periode atau lebih. Metode Kuadratik memiliki nilai R-Square sebesar 80,24% dan MAPE sebesar 3,28%. Hasil Peramalan selama 6 tahun menunjukkan banyaknya penduduk miskin di Provinsi Sulawesi Selatan mengalami peningkatan.
Perbandingan Model Value-at-Risk (VaR) Hybrid GARCH-EVT dan Model Standar dalam Pengukuran Risiko Ekstrem pada Portofolio Saham Sektoral di Indonesia Annisa Syalsabila; Ikhwana, Nur; Utomo, Agung Tri; Rahmanda, Lalu Ramzy; Rais, Zulkifli
VARIANSI: Journal of Statistics and Its application on Teaching and Research Vol. 7 No. 03 (2025)
Publisher : Program Studi Statistika Fakultas MIPA UNM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35580/variansiunm461

Abstract

This study aims to construct an optimal portfolio and compare the accuracy of various Value-at-Risk (VaR) models in measuring the risk of stock portfolios in the Indonesia Stock Exchange (IDX). The optimal portfolio is formed using the Minimum Variance Portfolio (MVP) method based on 11 sector-representative stocks for the period 2019–2025. The risk performance of this portfolio is then evaluated using six VaR models: Variance–Covariance (VC), Historical Simulation (HS), Monte Carlo (MC), GARCH (1,1), Extreme Value Theory (EVT-GPD), and the hybrid GARCH–EVT model. Model accuracy is assessed through backtesting using the Kupiec Proportion of Failures (POF) test and the Christoffersen Conditional Coverage (CC) test at the 95% and 99% confidence levels. The optimization results indicate that the MVP portfolio is dominated by defensive sectors such as consumer non-cyclicals (ICBP.JK) and large-cap banking (BBCA.JK). Backtesting results show that although all models perform adequately at the 95% level, standard models (VC, MC, GARCH) fail to capture extreme risk at the 99% level. In contrast, the GARCH–EVT model satisfies the backtesting criteria and emerges as the most accurate and superior model for predicting extreme losses.Penelitian ini bertujuan untuk membangun portofolio optimal dan membandingkan akurasi berbagai model Value-at-Risk (VaR) dalam mengukur risiko portofolio saham di Bursa Efek Indonesia (BEI). Portofolio optimal dibentuk menggunakan metode Minimum Variance Portfolio (MVP) dari 11 saham perwakilan sektor periode 2019-2025. Kinerja risiko portofolio ini kemudian diukur menggunakan enam model VaR: Variance-Covariance (VC), Historical Simulation (HS), Monte Carlo (MC), GARCH (1,1), Extreme Value Theory (EVT-GPD), dan model hybrid GARCH-EVT. Akurasi model diuji menggunakan backtesting Uji Kupiec (POF) dan Uji Christoffersen (CC) pada tingkat kepercayaan 95% dan 99%. Hasil optimisasi menunjukkan portofolio MVP didominasi oleh sektor defensif seperti consumer non-cyclicals (ICBP.JK) dan perbankan big-cap (BBCA.JK). Hasil backtesting menunjukkan bahwa meskipun semua model akurat pada tingkat 95%, model standar (VC, MC, GARCH) gagal mengukur risiko ekstrem pada tingkat 99%. Sebaliknya, model GARCH-EVT terbukti memenuhi uji dan menjadi model yang paling akurat dan superior untuk memprediksi kerugian ekstrem.
Spatio-Temporal Using Geographically Weighted Panel Regression for Modeling Environmental Quality Index Mar'ah, Zakiyah; Ruliana, Ruliana; Fikriani, Nurul Azurah; Ikhwana, Nur
Jurnal Varian Vol. 8 No. 3 (2025)
Publisher : Universitas Bumigora

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30812/varian.v8i3.5416

Abstract

The Environmental Quality Index (EQI) represents a numerical measure used to assess Indonesia’s environmental conditions and is published annually by the Ministry of Environment and Forestry. In 2019, the EQI was recorded at 66.55, reflecting a decline of 5.12 points from 71.67 in 2018. This study aimed to analyze EQI across 34 Indonesian provinces during the 2018–2022 period using the Geographically Weighted Panel Regression (GWPR) approach. Data were obtained from the official Statistics Indonesia website. The purpose of employing GWPR was to capture both spatial and temporal variations in the factors influencing EQI, recognizing that environmental dynamics differ by region. Model selection tests for panel data indicated that the Fixed Effects Model (FEM) was the most appropriate specification. Therefore, GWPR was applied in combination with FEM to improve estimation accuracy. The results showed that the significant determinants of EQI varied across provinces, highlighting the heterogeneous nature of environmental challenges. The GWPR with Fixed Effect Model achieved a global R² of 84.38%, a substantial improvement compared to the 42.52% R2 from the conventional global Fixed Effect panel regression. This finding confirmed that GWPR provided stronger explanatory power by incorporating local variations into the analysis. The study concluded that adopting GWPR is essential for more precise modeling of environmental quality. Furthermore, the results highlighted the importance of region-specific environmental policies tailored to each province’s unique conditions in Indonesia 
Co-Authors ., Maulana ., Sahabuddin Abidin, Muh. Zulkifli Adi Maulana, Adi Aidid, Muhammad Kasim Annisa Syalsabila Asfar, Suryawan Asmita Ahmad Aswi, Aswi Burhan, Moh. Junaedy Erman Syarif Fikriani, Nurul Azurah Haerany Sirajuddin Hamid Umar Ilham Alimuddin, Ilham Imran, A M Kajornsin, Boonreang Mangiri, Nalto Batty Mar'ah, Zakiyah Meinarni Thamrin Meutia Farida Muhammad Arif Tiro, Muhammad Arif Nur Syam Poerwanto, Bobby Rahmanda, Lalu Ramzy Rais, Zulkifli Ruliana Ruliana, Ruliana Sukri Nyompa Syamsunardi Syamsunardi, Syamsunardi Ulva Ria Irvan Utomo, Agung Tri