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All Journal Jurnal Pendidikan Matematika dan IPA Journal of Tropical Soils Jurnal Mahasiswa Ilmu Pemerintahan Universa Medicina Industria: Jurnal Teknologi dan Manajemen Agroindustri Agroteknika Variance : Journal of Statistics and Its Applications Law Research Review Quarterly REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Salam (Islamic Economics Journal) Tsaqofah: Jurnal Penelitian Guru Indonesia Electronic Journal of Education, Social Economics and Technology Jurnal Pendidikan dan Pengabdian Masyarakat COREAI: Jurnal Kecerdasan Buatan, Komputasi dan Teknologi Informasi Jurnal Ilmu Manajemen Dan Kewirausahaan (JIMK) IJRETINA - International Journal of Retina atech-i Parameter: Jurnal Matematika, Statistika dan Terapannya Communale Journal PENGAMATAN: Jurnal Pengabdian Masyarakat untuk Ilmu MIPA dan Terapannya
Yudistira Yudistira
STMIK AMIKOM Purwokerto
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Management of Hutumuri Village Infographics by Using Statistical Data Latupeirissa, Sanlly Joanne; Salhuteru, Rosalina; J. Wattimanela, Henry; Lembang, Ferry Kondo; J. Djami, Ronald; Y. Matdoan, Muhammad; S Laamena, Novita; Yudistira, Yudistira
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 6, No 2 (2025): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v6i2.137-145

Abstract

The problem of Hutumuri village officials is that they are limited in presenting data visually so that the available data is difficult to understand by the community. Therefore, the team decided to provide training to Hutumuri village officials in managing and utilizing population statistics data to create effective and attractive infographics. Village officials were trained to understand the basics of statistics, how to interpret data, and techniques for creating infographics using MS Excel. The training also covered data visualization concepts, such as the selection of colors, typography, and icons to make infographics attractive. Infographics are used to publish population statistics in Hutumuri Village, and village officials can easily present data in visual form at meetings or community gatherings. By this community service activity, village officials better understand the concept of population statistics data, can calculate and present population statistics in Hutumuri Village.
KEANEKARAGAMAN DAN KOMPOSISI IKAN PADA KONDISI PASANG DAN SURUT DI MUARA SUNGAI KELAY KABUPATEN BERAU KALIMANTAN TIMUR Yudistira, Yudistira; Jusmaldi, Jusmaldi; Hendra, Medi
Jurnal Pendidikan Matematika dan IPA Vol 10, No 2 (2019): Juli 2019
Publisher : Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (798.015 KB) | DOI: 10.26418/jpmipa.v10i2.25868

Abstract

Research on diversity and composition of fish at low tide and high tide condition in downstream Kelay River, District Berau, East Kalimantan is not yet know. The purpose of this research was to determine diversity and composition of fish that present at low tide and high tide condition in downstream Kelay River. In research using purposive sampling method and various sizes gill nets used. Results of this research shows that fish were collected at three locations sampling in downstream Kelay River consist of 14 species, 9 families, and 953 individuals. Based on the number of species, diversity Shannon-Wiener index and dominance index has stable of communities, with high value of diversity index (H'=1.975), high evenness index (E=0.749), and low value of dominance index  (D= 0.173). The number of fish species found at low tide were 11 species and at high tide were 12 species. The similarity index of fish species at low tide and high tide condition were 64.3%.
PERFORMANCE ANALYSIS OF RANDOM FOREST CLASSIFICATION ON UNEMPLOYMENT RATE IN MALUKU PROVINCE BASED ON DATA BALANCING METHOD Yunizar, Mahdayani Putri; Sinay, Lexy Janzen; Yudistira, Yudistira
VARIANCE: Journal of Statistics and Its Applications Vol 7 No 1 (2025): VARIANCE: Journal of Statistics and Its Applications
Publisher : Statistics Study Programme, Department of Mathematics, Faculty of Mathematics and Natural Sciences, University of Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/variancevol7iss1page31-38

Abstract

In 2023, the number of unemployed people in Maluku will reach 59,800 or 6.08% of the total population. To reduce unemployment in Maluku, it is essential to understand the unemployment situation of the Moluccan population based on socioeconomic factors immediately. Therefore, applying classification methods such as random forests is the right step, but it is recommended that the data be balanced to get accurate results. However, the unemployment rate in Maluku is much lower than that of the unemployed, so data imbalance affects the accuracy of the classification results. Therefore, a data balancing process is needed, among others, using the Random Oversampling of Sample (ROSE), Synthetic Minority Oversampling Technique (SMOTE), and Adaptive Synthetic Sampling (ADASYN) methods. This study uses data from the 2023 National Labor Force Survey (SAKERNAS) conducted in February by the Central Statistics Agency (BPS) of Maluku. The number of unemployed people is smaller than the number of unemployed residents. Therefore, action needs to be taken to address data inequality. The results of this study show that the random forest classification model with SMOTE has the best performance with a combination of 90% training data and 10% testing data, with a higher AUC value than other methods, and age variables are the most essential variables built into the model.
Use of Biochar to Control Root-Feeding Soil Nematodes on Muna Local Tomatoes Variety Ningsi, Fitri Wahyu; Hakim, Irfan; Dussy, Achmad Nur Azhary; Rahmaniar, Wa Ode; Yudistira, Yudistira; Kilowasid, Laode Muhammad Harjoni
JOURNAL OF TROPICAL SOILS Vol. 27 No. 1: January 2022
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2022.v27i1.37-47

Abstract

Energy pathways in soil nematode communities consist of energy pathways for roots, bacteria, and fungi. The dominance of the root energy pathway indicated an increase in nematode attacks on the roots that can be regulated through changes in food availability and the environment. This study aimed to (i) determines the effect of the biochar rate on soil nematode energy pathways on local tomato plants and (2) determine the biochar rate that can suppress the dominance of root-feeding nematodes of local varieties of Muna tomato plants. The treatment tested was the biochar rate expressed as a percentage of the biochar weight the soil weight, namely 0%, 5%, 10%, and 15%. Each was repeated three times, randomly placed in the experimental plot following the randomized block design procedure. The results showed that the addition of biochar to 10% of the soil weight decreased the abundance of the total nematodes and family Longidoridae, on the other hand, increased Aphelenchoididae, Spearman rho correlation. The abundance of root eaters decreased; on the other hand, fungivores increased with the biochar rate. Spearman rho indicated that fungivores were negatively correlated with root-feeders and omnivores while positively correlated with predators. It was concluded that applying biochar up to a rate of 10% of the soil weight before planting could suppress the abundance of root-feeding nematodes in the vegetative growth phase of Muna local tomatoes variety.
Pengaruh Pengetahuan, Sikap, Persepsi Terhadap Awareness Labelisasi Farmasi Halal dikalangan Mahasiswa  Cupian; Noven, Sarah Annisa; Anindya, Anindya; Syifa, Anisa; Yudistira, Yudistira
Salam (Islamic Economics Journal) Vol. 6 No. 1 (2025): June 2025
Publisher : Universitas Islam Negeri Raden Intan Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/wbtnqw46

Abstract

The halal status of goods consumed is important for people who embrace Islam. This is a necessity that has been explained in the Qur'an. In this study, consumption was related to the use of halal drugs or halal pharmaceuticals. In Indonesia, the use of halal pharmaceuticals is still minimal due to difficulties in procuring raw materials for halal pharmacy itself plus not all types of pharmaceutical products that have used halal raw materials have been labeled halal. This makes it more difficult for Muslims who want to take halal medicines,  even though Indonesia has the largest Muslim population in the world. This study aims to determine the effect of the level of knowledge, attitudes, and perceptions of Padjadjaran University health students towards awareness of halal pharmaceutical labeling. This study uses a descriptive quantitative approach and the method of data collection using the Random Sampling technique by distributing questionnaires to respondents. The results of data analysis show that the awareness of halal pharmaceuticals labeling is significantly and positively influenced by the variables of knowledge and perception while for the attitude variable has a positive but not significant effect.
Implementasi Pendidikan Lingkungan Hidup Berbasis Mangrove pada Sekolah Dasar Negeri Labuhan Lalar, Kabupaten Sumbawa Barat, NTB Sudirman, Sudirman; Nurinayah, Sevi; Rahma, Ayu Dyah; Darman, Luky Prassetya; Maswahenu, Mara; Yudistira, Yudistira
Jurnal Pendidikan dan Pengabdian Masyarakat Vol. 8 No. 3 (2025): Agustus
Publisher : FKIP Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppm.v8i3.9800

Abstract

Penerapan Pendidikan Lingkungan Hidup (PLH) pada sekolah dasar merupakan basis upaya untuk membentuk kepribadian para siswa sebelum pembentukan kepribadian masyarakat di masa mendatang. Sekolah Dasar Negeri Labuhan Lalar (SDN Labuhan Lalar) merupakan salah satu sekolah dasar yang berada di Kecamatan Taliwang, Kabupaten Sumbawa Barat dengan letak geografis berada di daerah pesisir, sehingga masyarakat berada pada lingkungan dengan banyak ekosistem mangrove. Tujuan dari pada penelitian ini adalah untuk mengetahui efektivitas dari PLH berbasis mangrove yang diterapkan di SDN Labuhan Lalar. Metode penelitian yang digunakan adalah metode kualitatif deskriptif. Langkah awal SDN Labuhan Lalar dalam penerapan PLH yaitu mengadakan training dari tenaga ahli terkait Pendidikan Lingkungan Hidup berbasis mangrove kepada para guru. Training menghasilkan tambahan ilmu untuk para guru agar dapat memberikan materi pembelajaran yang telah dikolaborasikan dengan Pendidikan Lingkungan Hidup seperti pada mata pelajaran Ilmu Pengetahuan Alam dan Sosial (IPAS) dan matematika. Kegiatan dalam program PLH di SDN Labuhan Lalar tidak hanya berfokus pada pelestarian ekosistem mangrove saja, akan tetapi juga fokus pada isu sampah plastik. Program yang telah diterapkan antara lain pembelajaran secara kontekstual, penaman mangrove dan pemantaun, gotong royong, dan piket kelas. Secara simultan, penerapan beberapa program tersebut telah membentuk karakter peduli lingkungan sekaligus membentuk sikap bertanggung jawab dari para siswa.
Diabetic retinopathy: pathogenesis, pathophysiology, and treatment Yudistira, Yudistira; Hendrawan, Kevin Anggakusuma; Andayani, Ari; Suryathi, Ni Made Ari
Universa Medicina Vol. 44 No. 2 (2025)
Publisher : Faculty of Medicine, Universitas Trisakti

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18051/UnivMed.2025.v44.270-284

Abstract

Diabetic retinopathy (DR) is the most common microvascular complication of diabetes mellitus (DM) and one of the leading causes of vision impairment worldwide. Prolonged hyperglycemia initiates a cascade of molecular events including chronic inflammation, oxidative stress, advanced glycation end products, and the activation of plasma kallikrein and protein kinase C signaling pathways, which leads to endothelial damage and pericyte loss. The resulting endothelial barrier dysfunction promotes serum leakage and retinal edema, while advanced disease stages are characterized by ischemia-driven retinal neovascularization mediated by elevated intraocular vascular endothelial growth factor (VEGF) levels. Current therapeutic strategies for diabetic retinopathy include laser therapy, intravitreal administration of anti-VEGF agents or corticosteroids, and vitreoretinal surgery. Despite their efficacy, a number of patients experience suboptimal responses. Consequently, novel therapeutic approaches are under investigation, including alternative anti-angiogenic agents, gene therapies, and visual cycle modulators currently undergoing clinical trials. A comprehensive understanding of the pathogenesis and pathophysiology of diabetic retinopathy is essential to improve existing treatment modalities and address current limitations in patient outcomes. In this review, we systematically searched and analyzed articles published in English from 2014 to 2024 using PubMed, ScienceDirect, SpringerLink, and Google Scholar. Relevant search terms included “diabetic retinopathy,” “pathophysiology,” “pathogenesis,” “treatment,” and “diabetic macular edema.” This review presents recent insights into the pathogenesis of diabetic retinopathy, including oxidative stress, inflammation, and neurodegeneration, followed by an overview of its pathophysiology such as microvascular dysfunction and neovascularization. Finally, current and emerging treatment modalities, encompassing both pharmacological and surgical approaches, are discussed. This structured approach provides essential background to understand the complexity of diabetic retinopathy and recent advances in its management.
The Effectiveness of Digital Services of the Directorate General of Taxes: A Case Study on MSMEs of the Indonesian Muslimah Entrepreneurs Association in Central Lombok Regency Yudistira, Yudistira
Electronic Journal of Education, Social Economics and Technology Vol 6, No 1 (2025)
Publisher : SAINTIS Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33122/ejeset.v6i1.361

Abstract

The purpose of this study is to analyze the effectiveness of the Directorate General of Taxes' digital services for MSMEs under IPEMI in Central Lombok Regency. This research adopts a qualitative approach with a case study design. Data collection techniques include observation and interviews, while data analysis is conducted using the Miles and Huberman approach. The results of the study indicate that the Directorate General of Taxes' (DGT) digital services are effective in supporting the fulfillment of tax obligations by MSME actors under IPEMI in Central Lombok Regency. The implication of this research is that taxation policies have a significant impact on society, particularly on MSMEs. Therefore, the proper formulation of tax regulations is critically important.
PENERAPAN SUPPORT VECTOR MACHINE (SVM) UNTUK KLASIFIKASI KABUPATEN TERTINGGAL DI PROVINSI MALUKU Palisoa, N. F.; Sinay, L. J.; Matdoan, M. Y.; Yudistira, Yudistira; Bakarbessy, Lusye
Parameter: Jurnal Matematika, Statistika dan Terapannya Vol 2 No 2 (2023): Parameter: Jurnal Matematika, Statistika dan Terapannya
Publisher : Jurusan Matematika FMIPA Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/parameterv2i02pp79-86

Abstract

Daerah tertinggal merupakan daerah yang memiliki masyarakat serta kondisi daerahnya kurang berkembang jika dibandingkan dengan daerah lain dalam skala nasional. Pemerataan pengembangan dan pembangunan daerah sangat penting untuk menjamin kesetaraan dan keseimbangan sosial ekonomi demi mencegah adanya daerah tertinggal. Provinsi Maluku merupakan salah satu daerah yang terletak di Kawasan Timur Indonesia dan merupakan salah satu propinsi dengan daerah tertinggal terbanyak yaitu sebanyak 6 kabupaten dari 11 kabupaten/kota. Untuk itu, perlu dilakukan pengklasifikasian wilayah agar dapat menentukan prioritas dalam pemerataan pembangunan yang cepat dan tepat sasaran. Salah satu metode statistika yang dapat digunakan dalam melakukan klasifikasi yaitu Support Vector Machine (SVM). Kelebihan SVM dibandingkan dengan metode lain adalah mampu menghasilkan model klasifikasi yang baik dengan akurasi yang lebih tinggi. Penelitian ini diperoleh hasil bahwa dengan menggunakan metode SVM diperoleh fungsi kernel terbaik yaitu fungsi kernel linear dengan parameter C=1 dan mampu mengklasifikasikan secara benar sebesar 76,13%. Sedangkan error rate model sebesar 23,87%, dimana kabupaten yang awalnya dikategorikan tidak tertinggal menjadi tertinggal ada 3 yaitu Kabupaten Maluku Tenggara, Maluku Tengah, dan Buru. Sementara kabupaten yang awalnya dikategorikan tertinggal menjadi tidak tertinggal juga ada 3 yaitu Kabupaten Seram Bagian Barat, Maluku Tenggara Barat, dan Maluku Barat Daya.
Development of Spatial Weighted Matrix based on Transportation Connectivity for Archipelago Provinces in Indonesia Sedubun, Debora Ribka; Yudistira, Yudistira; Laamena, Novita Serly; Salhuteru, Rosalina
Parameter: Jurnal Matematika, Statistika dan Terapannya Vol 2 No 2 (2023): Parameter: Jurnal Matematika, Statistika dan Terapannya
Publisher : Jurusan Matematika FMIPA Universitas Pattimura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/parameterv2i02pp101-114

Abstract

The application of spatial statistics is now commonly used in analysis of phenomena of strategic indicators in Indonesia, including in archipelago provinces. However, application of spatial statistics in archipelago provinces is constrained by spatial weighted matrix that are less relevant in identifying the spatial effects of indicators, due to enormous number of territories which not directly bordered by land. Meanwhile, transportation connectivity in archipelago provinces has expanded far beyond its administrative boundaries. Through this research, we tried to formulate concept in development of spatial weighted matrix based on transportation connectivity between regency/city in archipelago provinces. Our research used primary data processing methods as well as literature studies, with used the data of sea and air transport routes between regencies and cities in the 3 archipelago provinces: Maluku, Maluku Utara, and Kepulauan Riau. We developed several types of spatial weighted matrix based on transportation connectivity between regency/city in those three provinces, as well concepts in combining such matrix with other kinds of spatial weighted matrix. With our research, it is hoped that could trigger more spatial research related to strategic indicators in archipelago provinces in Indonesia.
Co-Authors Akbar, Fauzia Anindya, Anindya Ansory, Ahmad Ardani, Farell Ari Andayani Bakarbessy, Lusye Balami, A. M. Batubara, Fanny Yuliana Cupian Darman, Luky Prassetya Deded Chandra Defrian, Angga Dino Caesaron Djinis, Musdar Effy Dussy, Achmad Nur Azhary Effy Djinis, Musdar Effy Djinis Ferry Kondo Lembang Hakim, Irfan Hasibuan, Melkisedek Hasyim, Fuadz Haumahu, G. Hendrawan, Kevin Anggakusuma Ilma Mufidah J. Djami, Ronald J. Wattimanela, Henry Jusmaldi Jusmaldi Laamena, Novita S. Laamena, Novita Serly Laode Muhammad Harjoni Kilowasid Latupeirissa, S. J. Latupeirissa, Sanlly Joanne Lembang, F. K. Lewaherilla, Norisca Lexy Janzen Sinay, Lexy Janzen Loklomin, S. B. Malik, Kamil Malrianti, Yefsi Manalu, Omena Maswahenu, Mara Matdoan, M. Y. Medi Hendra, Medi Nanlohy, Y. W. A. Ni Made Ari Suryathi Ningsi, Fitri Wahyu Noven, Sarah Annisa Nurinayah, Sevi Palisoa, N. F. Rahma, Ayu Dyah Rahmaniar, Wa Ode Rizal, Fathur Rosalina Salhuteru S Laamena, Novita Sedubun, Debora Ribka Sinay, L. J. Sinurat, Frisella Br Siska Siska Sudirman Sudirman Syifa, Anisa Umbu Lapu, Ervan Suryanti Y. Matdoan, Muhammad Yunizar, Mahdayani Putri Zulnadi, Zulnadi