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All Journal Forum Pasca Sarjana Jurnal Lahan Suboptimal Jurnal Kedokteran dan Kesehatan : Publikasi Ilmiah Fakultas Kedokteran Universitas Sriwijaya Journal of Degraded and Mining Lands Management Biota Annual Research Seminar Majalah Kedokteran Sriwijaya Demography Journal of Sriwijaya Jurnal Penelitian Sains JST ( Jurnal Sains Terapan ) Jurnal Matematika Sains dan Teknologi BAREKENG: Jurnal Ilmu Matematika dan Terapan IJEMS (Indonesian Journal of Environmental Management and Sustainability) Jurnal Infomedia ILTIZAM Journal of Sharia Economic Research Jurnal Vokasi Abdimas: Jurnal Pengabdian Masyarakat Universitas Merdeka Malang Prima Abdika: Jurnal Pengabdian Masyarakat Journal La Lifesci SRIWIJAYA JOURNAL OF ENVIRONMENT Sanitasi: Jurnal Kesehatan Lingkungan Journal Of Safety and Health Pattimura International Journal of Mathematics (PIJMath) Journal of Smart Agriculture and Environmental Technology

Ngudiantoro .

Universitas Sriwijaya

Author-ID : 213497

Agriculture, Biological Sciences & Forestry Arts Humanities Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Transportation Veterinary Other

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Deskripsi dan Uji Hipotesis Data Elemen-Elemen Cuaca Menggunakan Uji Selisih Mean dan Uji Rasio Variansi Dihubungkan dengan Produksi Kopi Dua Kecamatan di Pagaralam Tahun 2022-2023 Irmeilyana, Irmeilyana; Suratama, Bintang; Maiyanti, Sri Indra; Ngudiantoro, Ngudiantoro; Suprihatin, Bambang; Desiani, Anita
Jurnal Penelitian Sains Vol 27, No 2 (2025)
Publisher : Faculty of Mathtmatics and Natural Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56064/jps.v27i2.1169

Cuaca merupakan keadaan atsmofer pada waktu tertentu yang sifatnya berubah-ubah dari waktu ke waktu. Perubahan cuaca dapat berdampak pada produktivitas tanaman termasuk produksi kopi. Penelitian ini membahas penerapan uji selisih mean dan uji rasio variansi pada perbandingan elemen-elemen cuaca tahun 2021-2022 di 2 kecamatan penghasil kopi di Sumatera Selatan, yaitu Kecamatan Dempo Tengah dan Kecamatan Tanjung Sakti Pumi. Data elemen cuaca yang digunakan merupakan data sekunder terdiri dari 10 variabel dalam waktu harian. Nilai mean elemen-elemen cuaca di kedua kecamatan pada tahun 2022 yang berbeda nyata dengan tahun 2021 meliputi suhu, suhu maksimum, suhu minimum, cakupan curah hujan, arah angin dan berawan. Nilai mean suhu, suhu minimum, cakupan curah hujan, dan berawan di masing-masing kecamatan pada tahun 2021 lebih tinggi dibandingkan tahun 2022. Sebaliknya, suhu maksimum di Kecamatan Tanjung Sakti Pumi pada tahun 2021 lebih rendah dibandingkan tahun 2022. Kecepatan angin dan derajat arah angin di Kecamatan Dempo Tengah pada tahun 2021 lebih rendah daripada tahun 2022. Hampir semua elemen cuaca di setiap kecamatan tahun 2022 lebih bervariasi daripada tahun 2021, kecuali suhu di Kecamatan Tanjung Sakti Pumi. Perbedaan elemen-elemen cuaca selama tahun 2021 dan tahun 2022 merupakan salah satu faktor yang dapat mempengaruhi perbedaan produksi kopi pada tahun 2022 dan tahun 2023 di dua kecamatan tersebut.

Spatial Conditions of Water Regulating Environmental Services Triana, Neni; Ngudiantoro, Ngudiantoro; Priatna, Satria Jaya
Journal La Lifesci Vol. 6 No. 3 (2025): Journal La Lifesci
Publisher : Newinera Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37899/journallalifesci.v6i3.2396

South Sumatra Province has abundant natural resources that support the economy, but uncontrolled development triggers environmental degradation and disaster risks. Sustainable management is needed in accordance with Law No. 32/2009 and PP No. 22/2021. Water regulation environmental services play an important role in maintaining hydrological and ecosystem balance. GIS-based spatial mapping of landscapes, natural vegetation, and land cover is important as a basis for sustainable environmental policies. The research was conducted in South Sumatra Province using secondary data from the Ministry of Environment and Forestry and related agencies. Spatial analysis was carried out based on GIS with an overlay approach to three parameters: land cover (weight 60%), landscape (28%), and natural vegetation (12%). The assessment used the Simple Additive Weighting (SAW) method and produced the Environmental Services Performance Index (IKJLH), which was classified into five categories: very low to very high. The results are visualized in a colored thematic map to show the differences in water regulation performance in each region. The results of the 2023 spatial analysis show that most areas in South Sumatra Province have good water regulation environmental services performance, with a dominance of medium (55%) and high (33%) categories. Ogan Komering Ilir (60.93%), Banyuasin (53.24%), and North Musi Rawas (26.19% very high) are among the best performing areas. In contrast, Palembang City (52.05% low), Empat Lawang, Lahat, and Lubuk Linggau show ecological pressure due to urbanization and land use changes. This condition emphasizes the importance of sustainable environmental management to maintain water regulatory functions in the future.

CORRESPONDENCE ANALYSIS PADA HUBUNGAN FAKTOR-FAKTOR YANG MEMPENGARUHI PENDAPATAN PETANI KOPI PAGARALAM Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Rodiah, Desty
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 15 No 1 (2021): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Pagaralam is one of the coffee-producing districts in South Sumatra (Sum-Sel). Pagaralam coffee farming is a hereditary business, where the majority of land processing is still traditional. This is related to working capital and farmers' income. This study aims to analyze the factors that affect the income of Pagaralam coffee farmers by using correspondence analysis. There are 30 variables or factors studied. Each variable is divided into several categories. The categories of each variable are described graphically with the categories of income variable. Primary data were obtained from 196 respondents who were selected based on purposive sampling technique. There are 13 factors that affect the income of respondents, namely: number of dependents, number of trees, age of the trees, number of female workers from outside the family, frequency of fertilization, frequency of herbicide application, production of harvest, production outside of harvest, gross income, minimum price of coffee beans, the maximum price of coffee beans, economic status and land productivity. There are 8 of the 13 factors that predominantly characterize the profile of net income level of Pagaralam coffee farmers. In general, the factor that must be considered in coffee farming is land productivity which is also related to production costs in land processing and crop production, as well as external factors regarding the market price of coffee.

REGRESSION MODEL ON PAGARALAM COFFEE FARMERS’ INCOME WITH THE INFLUENCE OF THE USE OF HERBICIDE REDUCTANT VARIABLE Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Maiyanti, Sri Indra
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 16 No 2 (2022): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

The existence of weeds in coffee fields will become competitors for coffee plants, so that they can be economically and ecologically detrimental. Inappropriate use of chemical herbicides can have a negative impact. Herbicide reductants made from organic are used in weed control. This study aims to analyze the variables that affect the net income of Pagaralam coffee farmers using multiple linear regression analysis. One of these variables is a qualitative variable in the form of categories of respondents based on the use of herbicide reductants. The data used was obtained from the results of questionnaires on 56 respondents who are users and 80 respondents who are not users of herbicide reductants. The results of the hypothesis test of mean difference found that the net income of the two respondent categories is not different. The regression analysis also resulted that there was no significant difference in net income between the two respondent categories. Variables that had a significant effect on net income included gross income, farming maintenance costs, estimated yields, and tree age. Several models also contain variables of land area, length of time in coffee farming, number of trees, and frequency of organic fertilizers used. Old coffee trees should be treated better with the use of organic fertilizers and also wise weed control techniques.

APPLICATION OF TWO GROUPS ANALYSIS AND CLUSTER ANALYSIS ON COMPARISON OF CHARACTERISTICS OF PAGARALAM COFFEE FARMERS CATEGORIES Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Maiyanti, Sri Indra
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 1 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Land care is one of the factors that must be considered in the sustainability of coffee production. A small number of Pagaralam coffee farmers know and apply reductant herbicide in weed control. This study aims to compare the characteristics of Pagaralam coffee farmers based on the use of reductant herbicide by using two groups analysis and cluster analysis. The characteristics of the farmers studied included 17 variables on 165 respondents who were selected by purposive sampling. The variables studied include land productivity and farmers' income. Respondents were divided into 2 categories, namely users and non-users of reductant herbicide. The initial stages of data processing in the form of descriptive statistics, hypothesis testing by mean difference test, correlation between variables, Principal Component Analysis, and biplot analysis. According to the results of the two groups analysis and cluster analysis, the variables dominantly tend to characterize the similarity in comparison between the categories of non-users and users are the variables that join into one cluster, namely land area, number of trees, coffee bean production, estimated yield, total harvest, Gross income, and Net income. While the variables that dominantly characterize the dissimilarity between the two categories are the variables that form 5 separate clusters, namely the clusters of plantation productivity, respondent identity, education, tree age, and length of harvest period.

LOGISTIC REGRESSION MODELING OF REDUCTANT HERBICIDE IN PAGARALAM COFFEE FARMING Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Maiyanti, Sri Indra; Makhalli, Siddiq
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 4 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/barekengvol17iss4pp1957-1968

The presence of weeds can affect the productivity of coffee plants. The use of herbicides that are not wise in controlling weeds can have a negative impact on the quality of coffee production and land. This study aims to obtain a binary logistic regression model of the use of reductant herbicides by coffee farmers in Pagaralam South Sumatera. This research involved 165 coffee farmers, consisting of 81 farmers who used reductants and 85 farmers who did not use reductants. In the results of bivariate analysis, variables that have a significant effect on the status of using reductant herbicides, do not necessarily have a significant effect on the logistic regression model. Overall prediction accuracy of the model results of the enter method and backward method are respectively 78.2% and 76.4%. The two best models obtained show that farmer age, number of trees, number of family workers, and land productivity can reduce the probability value of farmers using reductant herbicide. On the other hand, variables that can increase the opportunity value of using reductants, starting with the greatest effect, are net income, length of harvest, frequency of herbicide use, frequency of use of organic fertilizers, and age of trees. Based on the factors that affect the use of reductants, coffee farmers should set aside costs for land maintenance, including costs for environmentally friendly weed control, so that they can support the coffee plants to continue producing optimally.

Analisis Gangguan Fungsi Ginjal pada Pekerja Pabrik Crumb Rubber di Kota Palembang Sumatera Selatan Oktriyedi, Ferly; Irfanudin, Irfanudin; Ngudiantoro, Ngudiantoro; Dahlan, M Hatta; Handayani, Lela
Journal Safety and Healthty Vol 2 No 1 (2025): Journal Of Safety and Health
Publisher : Program Studi Magister Kesehatan Masyarakat, Universitas Kader Bangsa Palembang

Garis-Garis Besar Haluan Negara menyatakan sasaran pembangunan jangka panjang adalah tercapainya keseimbangan antara pertanian dan industri. Pabrik karet alam merupakan salah satu industri yang mengelola karet alam menjadi kualitas Standar Indonesian Rubber (SIR) 20, Standar Indonesian Rubber (SIR) 10 dan Ribbed Smoked Sheet (RSS). Industri crum rubber ini berlokasi di area pemukiman penduduk. Potensi cemaran di industri crumb rubber dalam bentuk cemaran air dan udara. Studi ini menggunakan desain cross-sectional. Analisa data menggunakan Metode CHAID (Chi-Square Automatic Interaction). Nilai p <0,05 dianggap signifikan secara statistik. Hasil studi didapatkan konsentrasi rata-rata H2S di udara dan di padatan diatas baku mutu dan Konsentrasi rata-rata H2S dan NH3 masih dibawah baku mutu, kecuali konsentrasi rata-rata NH3 di air dan di padatan diatas baku mutu. Hasil analisis metode CHAID didapatkan kadar glukosa darah berhubungan dengan Gangguan Fungsi Ginjal (p = 0,000; chi square = 48,766) dan Risiko paparan H2S di udara dengan Gangguan Fungsi Ginjal (p = 0,000; chi square = 15,713). Selain itu didaptkan juga segmen ganguan fungsi ginjal, yaitu pada segmen ke-1: Pekerja yang kadar glukosa darahnya tidak normal; persentase risiko sebesar 11,2%. Kata kunci: karet alam, industri, penyakit akibat kerja, Gangguan Fungsi Ginjal

Pelatihan Pemanfaatan Gawai dan Perhitungan Keuangan Usaha dalam Menumbuhkan Jiwa Kewirausahaan pada Siswa SMK Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Maiyanti, Sri Indra; Setiawan, Arum; Zubaidah, Zubaidah
Prima Abdika: Jurnal Pengabdian Masyarakat Vol. 5 No. 1 (2025): Volume 5 Nomor 1 Tahun 2025 (Maret)
Publisher : Program Studi Pendidikan Guru Sekolah Dasar Universitas Flores Ende

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/abdika.v5i1.5052

The entrepreneurial spirit is one of the basics for forming the competencies of vocational school graduates. The lack or absence of ideas and enthusiasm (mental) for vocational school students to become entrepreneurs can be due to their mindset and skills (competencies) which are still lacking. The area of activity carried out is increasing the knowledge, skills and entrepreneurial spirit of students at SMK Negeri 1 Tanjung Batu, Ogan Ilir Regency, South Sumatra, through training in using gadgets, mastering digital literacy and using social media in digital marketing, as well as improving management skills. finance (including administration) through the use of Excel. This community service activity (PPM) also introduced several examples of business ideas and provides practical simulations of business simulations carried out by students participating in the Mathematics Entrepreneurship Course I in the current semester at the same time as PPM activity. Methods for implementing activities include presentations (material transfer), questions and answers and discussions, demonstrations/practices, simulations, and implementation assistance. Training on using smartphones to create creative content on social media can increase the enthusiasm of vocational school students majoring in TKJ (Department of Computer and Network Engineering) in getting to know the world of business, so that they can also develop their entrepreneurial spirit and become more familiar with business ideas. Apart from that, students become more familiar with using Microsoft Excel for simple calculations on business financial bookkeeping problems, so that it can motivate them to further improve their competency in using devices. The involvement of students as assistants in implementing the PPM activities of the Village Lecture Scheme is a field practice from the Mathematics Entrepreneurship Course I (in the MBKM curriculum), so that they can gain experience, information and contribute to the community outside the campus, as well as business experience.

Correspondence Analysis to Know Factors Related to the Use of Reducant Herbicide on Pagaralam Coffee Farmers Irmeilyana, Irmeilyana; Ngudiantoro, Ngudiantoro; Maiyanti, Sri Indra; Febriyanti, Indrike
Pattimura International Journal of Mathematics (PIJMath) Vol 1 No 2 (2022): Pattimura International Journal of Mathematics (PIJMath)
Publisher : Pattimura University

Weed control is an attempt to care for agricultural land that can affect coffee production. This study aims to analyze the factors that have a relationship with the use of reductant herbicide in Pagaralam coffee farmers by using simple correspondence analysis. The research data included 19 variables and 3 categories of respondents based on the use of reductant herbicide, namely non-users, new users, and users. At the initial stage, each variable was carried out a mean difference test between 2 categories of respondents. Furthermore, each variable is divided into several categories. Then, by using the independence test, the categories of each variable are associated with the category of reductant use. There are 7 factors that have a relationship with the use of reductants, namely education of respondents, age of trees, length of harvest, frequency of herbicide use, frequency of chemical fertilizers used, frequency of organic fertilizers used, and number of labour outside the family (TL). The results of the correspondence analysis plot can show differences in the characteristics of the respondent's categories according to the use of reductant herbicide. The user category is dominantly characterized by having junior high school education, tree age more than 25 years, tend not to use organic fertilizer, and the harvest period can reach 3 months.

Co-Authors Affandi, Azhar Kholiq Ali Amran Anita Desiani Ari Siswanto Armanto, M Edi Arum Setiawan Arum Setiawan Bambang Suprihatin Dahlan, M Hatta Damiri , Nurhayati Dedi Setiabudidaya Desty Rodiah Dwi Setyawan Eddy Ibrahim Edward Saleh Elisa Wildayana Elyantari, Gresi Fauziyah Febriyanti, Indrike FERLY OKTRIYEDI Handayani, Lela Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hidayat Pawitan Hikmah Utari Horia Horia Indah Amalia, Indah Irfannuddin Irfannuddin Irfanudin, Irfanudin Irmeilyana Jihan F. Lubis Jihan Farhan Lubis Komang Suryati Laila Hanum Leni Triana Lubis, Jihan F. Lulu Gloria M Yanuar J. Purwanto M. Hatta Dahlan M. Hatta Dahlan M. Yanuar J. Purwanto M. Yanuar J. Purwanto M. Yanuar J. Purwanto M. Yunus Makhalli, Siddiq Mariana Mariana Momon Sodik Imanuddin Muhammad Ardiansyah Muhammad Ardiansyah Muhammad Ardiansyah Muhammad Hatta Dahlan Muhammad Hendri Mukhlizar Nirwan Samsuri Neni Triana, Neni Novrikasari Novrikasari, Novrikasari Nura Malahayati Nurhayati Damiri Oki Dwipurwani Putri, Rizki Eka Rico J. Sitorus Robianto H. Susanto Robiyanto H Soesanto Robiyanto H. Susanto Rostika Flora Rully Marinto Saputra, Erlianto Hona Satria Jaya Priatna, Satria Jaya Septarini Eka Putri Setiabudidaya, D Settings Robiyanto H. Susanto Sri Indra Maiyanti Sri Indra Maiyanti Suratama, Bintang Suryadi Tjekyan Syarifuddin, Fauzi Yusuf Taufik Toha Taufik Toha, Taufik Tri Hastuti Sulistiyo Yowono Yowono Yuanita Windusari Yulifa Handayani Zubaidah R, Zubaidah Zuhdi, Mohd Zulkarnain Zulkarnain

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