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All Journal Ruwa Jurai: Jurnal Kesehatan Lingkungan MATHunesa: Jurnal Ilmiah Matematika
Fais Jefli
Politeknik Statistika STIS
Environmental Science Health Professions Mathematics Public Health

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Integration of Remote Sensing Data and Official Statistics: Spatial Analysis of Environmental, Social, And Basic Access Dimensions on Infant Mortality in Eastern Indonesia, 2022 Fais Jefli; Avril Irene Hutauruk; Kezia Dianrani Hutagalung; Muh Yusuf. S; Nadine Rolanda Cantika; Nurul Izzah; Fitri Kartiasih
Ruwa Jurai: Jurnal Kesehatan Lingkungan Vol. 20 No. 1 (2026)
Publisher : Poltekkes Kemenkes Tanjung Karang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26630/rj.v20i1.5551

Abstract

In 2022, Eastern Indonesia continued to experience a relatively high infant mortality rate (IMR) compared to the national average, with several regions in Papua categorized as having high IMR levels. This situation highlights the urgency of identifying the underlying determinants. Various dimensions, including environmental, social, and access-to-basic-services factors, are important to investigate. However, since environmental variables are not available in official statistical data, remote sensing data were utilized as an alternative source. This study integrates official statistical data and remote sensing data to identify the determinants of IMR. The remote sensing data were obtained through Google Earth Engine script processing. Preliminary modeling indicated the presence of spatial heterogeneity; therefore, a Geographically Weighted Regression (GWR) approach was employed to examine the local variation in the effects of each independent variable. Based on the significance mapping of model parameters, substantial spatial variation in IMR was observed across Eastern Indonesia. The GWR results indicate that environmental variables were generally not the dominant factors contributing to higher IMR, as most local coefficients reflected infrastructure disparities. The only environmental variable that consistently showed a significant effect was Land Surface Temperature (LST). In contrast, social conditions and access to basic services played a more substantial role in explaining variations in IMR across Eastern Indonesia. Barriers to healthcare access, low levels of welfare, and limited infrastructure were identified as the main factors contributing to the high infant mortality rates in Eastern Indonesia in 2022.
DIGITALISASI SEBAGAI PENDORONG STATUS EKSPOR USAHA KEPULAUAN RIAU: PENDEKATAN REGRESI LOGISTIK BINER FIRTH Fais Jefli; Maylani Puspita Sari; Rulistia Amanda; Muhammad Vitto Siregar; Isnaini Putri Laili Nur Alimah
MATHunesa: Jurnal Ilmiah Matematika Vol. 14 No. 01 (2026)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/mathunesa.v14n1.p307-315

Abstract

Usaha e-commerce merupakan kegiatan jual beli yang memanfaatkan perangkat digital, dan dalam era globalisasi saat ini menjadi solusi terhadap berbagai keterbatasan geografis, khususnya dalam menunjang aktivitas ekspor. Namun demikian, status ekspor usaha e-commerce di Kepulauan Riau masih tergolong rendah dibandingkan dengan provinsi lain, meskipun wilayah ini memiliki kedekatan geografis dengan negara tetangga seperti Malaysia dan Singapura. Berdasarkan kondisi tersebut, penelitian ini bertujuan untuk mengidentifikasi faktor-faktor yang memengaruhi status ekspor usaha e-commerce di Kepulauan Riau, dengan fokus pada aspek digitalisasi dan aspek kontrol usaha. Mengingat variabel respon bersifat biner dan terdapat ketidakseimbangan kelas (rare events), pendugaan parameter dilakukan menggunakan metode Penalized Maximum Likelihood Estimation (PMLE). Hasil uji parsial pada taraf signifikansi 10% menunjukkan bahwa variabel lama usaha beroperasi, penggunaan media sosial, dan pelatihan pemasaran digital berpengaruh signifikan dalam meningkatkan peluang ekspor. Dengan demikian, semakin lama usaha beroperasi, semakin optimal pemanfaatan media sosial, serta semakin sering mengikuti pelatihan pemasaran digital, maka kecenderungan usaha e-commerce untuk melakukan ekspor akan semakin tinggi.
Co-Authors Avril Irene Hutauruk Fitri Kartiasih Isnaini Putri Laili Nur Alimah Kezia Dianrani Hutagalung Maylani Puspita Sari Muh Yusuf. S Muhammad Vitto Siregar Nadine Rolanda Cantika Nurul Izzah Rulistia Amanda