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All Journal Jurnal Dedikasi JOURNAL AGRIBUSINESS Jurnal sistem informasi, Teknologi informasi dan komputer OCTOPUS : Jurnal Ilmu Perikanan Jurnal Ilmiah KOMPUTASI Mimbar Agribisnis: Jurnal Pemikiran Masyarakat Ilmiah Berwawasan Agribisnis Faktor Exacta BAREKENG: Jurnal Ilmu Matematika dan Terapan Journal of Socioeconomics and Development Journal of Physics and Its Applications Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Faktor Jurnal Ilmiah Kependidikan JISICOM (Journal of Information System, Infomatics and Computing) Journal of Information System, Applied, Management, Accounting and Research Jurnal Review Pendidikan dan Pengajaran (JRPP) Jurnal Pengabdian Al-Ikhlas Jurnal JTIK (Jurnal Teknologi Informasi dan Komunikasi) ZIRAA'AH MAJALAH ILMIAH PERTANIAN Abdimas Galuh: Jurnal Pengabdian Kepada Masyarakat Jurnal Inovasi Informatika Jurnal Agristan JURNAL ILMIAH GLOBAL EDUCATION Jurnal Sains Agribisnis International Journal Software Engineering and Computer Science (IJSECS) Journal of Artificial Intelligence and Digital Business Journal of Research and Publication Innovation Jurnal AGRISEP: Kajian Masalah Sosial Ekonomi Pertanian dan Agribisnis AgriMu Jurnal Akselerasi Merdeka Belajar dalam Pengabdian Orientasi Masyarakat (Jurnal AMPOEN) Jurnal Indonesia : Manajemen Informatika dan Komunikasi Jurnal Pengabdian Masyarakat Indonesia (JPMI) Journal of Multidisciplinary Inquiry in Science, Technology and Educational Research International Journal of Business and Quality Research International Journal of Economics, Business and Innovation Research IECON: International Economics and Business Conference CITAKARYA Jurnal Pengabdian Masyarakat CITACONOMIA : Economic and Business Studies Aksi Kita: Jurnal Pengabdian Kepada Masyarakat
Sri Mardiyati
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Determinants of Export Competitiveness of Coffee Commodities in South Sulawesi Ummul Khair; Sri Mardiyati; Amruddin; Mohammad Natsir; Muh. Arifin Fattah
International Journal of Economics, Business and Innovation Research Vol. 5 No. 02 (2026): February - March, International Journal of Economics, Business and Innovation
Publisher : Cita konsultindo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/ijebir.v5i02.3037

Abstract

Negotiation and strategic positioning in international trade are crucial for maximizing the economic benefits of agricultural commodities. This study aims to analyze the determinants of the export competitiveness of coffee from South Sulawesi, Indonesia, during the 2010–2024 period. The independent variables examined include coffee production capacity, world coffee prices, and the exchange rate of the Indonesian Rupiah (IDR) against the US Dollar (USD), while the dependent variable is export competitiveness, measured by the Revealed Comparative Advantage (RCA) index. Utilizing an Ordinary Least Squares (OLS) regression model, the findings reveal that the model explains 70.5% of the variance in coffee export competitiveness. Statistically, both coffee production and the exchange rate exhibit a significant negative impact on the RCA index, suggesting structural vulnerabilities related to supply quality and high dependency on imported agricultural inputs. Conversely, world coffee prices do not significantly influence export competitiveness, indicating the position of local exporters as price takers bound by long-term forward contracts. These findings emphasize the urgent need for strategic policy shifts from quantity-oriented agricultural expansion to quality standardization and upstream cost stabilization.
Relativistic Effects and Stellar Properties in Hipparcos Binary Stars, White Dwarfs, and Neutron Stars Yasin, Verdi; Sahroni, Taufik Roni; Siagian, Ruben Cornelius; Mardiyati, Sri; Pramarta, Pandhu; Wujarso, Riyanto; Saprudin, Saprudin; Alfin, Edward
Journal of Physics and Its Applications Vol 8, No 1 (2026): February 2026
Publisher : Diponegoro University Semarang Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jpa.v8i1.29176

Abstract

The research analyzes astrophysical phenomena in binary stars, fast stars, white dwarfs, and neutron stars, taking relativistic effects into account using Hipparcos catalog data. The objectives are to evaluate the relativistic precession of binary stars, the Shapiro delay due to the supermassive black hole Sgr A, the relativistic correction of neutron star luminosity, the distribution of star populations in the Hertzsprung–Russell diagram, the gravitational redshift of white dwarfs, and the characteristics of stars with extreme transverse velocities. Data from 10,726 binary star systems and 602 white dwarfs were processed numerically using R for data manipulation, visualization, and statistical calculations. The results show that relativistic precession in binary stars is generally small, increases in narrow orbits, and follows a power law with respect to the semi-major axis (exponent −0.453). Shapiro delay varies with projected distance to Sgr A, with most stars experiencing small delays, while some experience delays of up to 310 seconds. Neutron star luminosity shows a relativistic correction of ~0.03%, consistent with gravitational redshift and time dilation. The Hertzsprung–Russell diagram shows a clear separation between giants, main sequence stars, and white dwarfs, with a significant linear relationship between absolute magnitude and color index (B−V). The gravitational redshift of white dwarfs is controlled by radius (exponent −1.0001), while stars with extreme velocities form a heterogeneous and evenly distributed population. In conclusion, Hipparcos data support general relativity predictions and enable quantitative evaluation of stellar physics and evolution. Research novelties include systematic measurements of relativistic precession, Shapiro delay, neutron star luminosity corrections, white dwarf radius–redshift relationships, and kinematic characteristics of extreme stars.
Analisis Risiko Harga Daging Sapi dan Daging Ayam di Sulawesi Selatan ST. Rahmah; Sri Mardiyati; Saleh Molla; Fatmasari Syafruddin, Reni; Nurdin
CITACONOMIA : Economic and Business Studies Vol. 5 No. 01 (2026): Januari-Maret
Publisher : CITACONOMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/citaconomia.v5i01.3007

Abstract

Penelitian ini bertujuan untuk mengetahui fluktuasi dan trend harga komoditas daging sapi dan daging ayam ras di pasar tradisional Provinsi Sulawesi Selatan pada Januari 2021 hingga Desember 2025 serta untuk menganalisis tingkat risiko harga komoditas daging sapi dan daging ayam ras di pasar tradisional Provinsi Sulawesi Selatan pada Januari 2021 hingga Desember 2025. Jenis data yang digunakan merupakan data kuantitatif dan sumber dari data sekunder (time series) berupa harga bulanan komoditas daging sapi dan daging ayam ras di pasar tradisional Provinsi Sulawesi Selatan selama periode Januari 2021 hingga Desember 2025 atau selama 60 bulan. Metode analisis data yang digunakan dalam penelitian ini adalah analisis regresi linear sederhana dan analisis koefisien variasi (CV). Hasil penelitian menunjukkan bahwa harga daging sapi relatif stabil dengan rata-rata Rp121.367 per kilogram, fluktuasi dari Rp110.000 (Januari 2021) hingga Rp127.500 (November 2025), dan trend meningkat sebesar Rp244,43 per kilogram per bulan (R² = 0,7749). Sebaliknya, harga daging ayam ras lebih berfluktuasi dengan rata-rata Rp26.190 per kilogram, fluktuasi dari Rp21.750 (Maret 2021) hingga Rp35.350 (Mei 2022), dan trend mendatar dengan kenaikan Rp14,423 per kilogram per bulan (R² = 0,0073). Risiko harga daging sapi (CV 4%) dan daging ayam ras (CV 11%) tergolong rendah.
Analisis Preferensi Petani Terhadap Pembelian Benih Jagung Hibrida Di Kecamatan Kahu, Kabupaten Bone Nursyafika, Andi; Mardiyati, Sri; Muh. Al Aswar Rusman; Zulkifli; Syarif, Asriyanti
CITACONOMIA : Economic and Business Studies Vol. 5 No. 01 (2026): Januari-Maret
Publisher : CITACONOMIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.63922/citaconomia.v5i01.3008

Abstract

Penelitian ini bertujuan untuk menganalisis preferensi petani terhadap pembelian benih jagung hibrida serta menganalisis faktor-faktor yang memengaruhi preferensi tersebut. Penelitian ini menggunakan teknik simple random sampling dengan penentuan jumlah sampel menggunakan rumus Slovin. Teknik analisis data yang digunakan meliputi Mean Percentage Score (MPS) untuk menganalisis preferensi petani dan regresi linear berganda untuk menganalisis faktor-faktor yang memengaruhinya. Hasil penelitian menunjukkan bahwa sebagian besar petani (36,84%) memilih benih jagung hibrida merek NK212, diikuti Bisi 18 sebesar 35,09% dan Bisi 2 sebesar 28,07%. Preferensi tertinggi (69,80%) didasarkan pada faktor ketersediaan benih, sedangkan preferensi terendah (65,00%) didasarkan pada faktor kualitas benih. Hasil analisis regresi menunjukkan bahwa kualitas benih, ketersediaan benih, pendidikan, dan luas lahan garapan berpengaruh signifikan terhadap preferensi petani. Semakin tinggi kualitas dan ketersediaan benih serta tingkat pendidikan petani, maka semakin tinggi kecenderungan petani memilih benih jagung hibrida. Sebaliknya, semakin luas lahan garapan, maka kecenderungan memilih benih jagung hibrida semakin rendah.
Co-Authors Abdul Haris Abdul Rahman Nur Aditya Adlu Rahman Amruddin Amruddin . Amruddin Amruddin Amruddin, Amruddin Andi Prastomo Arham, Sarifuddin Arifin Arifin Armansyah, Muh Reynaldi Asmoro, Eko Tri Asriyanti Syarif, Asriyanti B, Sumarni Bambang Perkasa Alam Dewi Driyani DIAN LESTARI Dwi Nurcahya, Saputra Edward Alfin Edward, Ruben Estiningsih, Wening Fachruzzaki, Fachruzzaki Farida Russa Fatmasari Syafruddin, Reni Fatmawaty Fatmawaty, Fatmawaty Fattah, Muh Ainul Fattah, Muh Arifin Fattah, Muhammad Arifin Febrian , Wenny Desty Febriani, Vera Firmansyah Firmansyah Friza Youlinda Hamzah Hanifah Azwar Hardana, Herdy Hasna, Hasna Hasriani Hasriani, Hasriani Hidayatulloh, Reko Syarif Hikma Suci Putri hurnaningsih Hurnaningsih, Hurnaningsih I Putu Dody Suarnatha Ida Fitriani Ihdayatul, Maghfira Jamaluddin Juliana Juliana Julisawati, Elly Agustina Jumiati Jumiati juswansar Lengam, Rino Lusi Ariyani Marpuah, Iim Mohammad Natsir Mohammad Natsir Mona, Putri Mey Muflihun, Sadiqin Muh. Al Aswar Rusman Muh. Arifin Fattah Muhammad Irwandhi Amri Muhlis Muslimin Muslimin Nadir Nadir, Nadir Natsir, Mohammad Nazelliana, Dian Ningsih, Retna Nur Rizkiyah Nurdin Nurdin Nurdin Nursyafika, Andi Oktavia Lilyasari Pauziah, Ulfa Pramarta, Pandhu Pujiastuti PURWANTI PURWANTI Putri Handayani Rahmawati, Lailia Rahmawati, Rahmawati Ratnawati Tahir Ratnawati Tahir, Ratnawati Razak, A Rosdianti Ricky Ardiansyah Rini Amalia Sahroni, Taufik Roni Saleh Molla Saprudin Saprudin, Saprudin Saputro, Rifqi Wanda Saripah Saripah, Saripah Siagian, Ruben Cornelius Sigit, Ananda Slamet Hamid Sri Melati Sagita Sribianti, Irma Sriyono Sriyono St Rahmah Sutrisno, Danang Syafiuddin Syafiuddin Syafiuddin Syuhardi, Yossi Indrawati Tanamal, Nini Adelina Tri Angkarini Ummul Khair Wahyu Utama Wardah, Sitti wati, Nasra Wibowo, Arief Nugroho Wujarso, Riyanto Yasin, Verdi Zulkifli