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All Journal KEUNIS Madani : Indonesian Journal of Civil Society
Septi Purwaningsih
Politeknik Negeri Cilacap
Humanities Economics, Econometrics & Finance

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Modeling The Trade Flows of Leading Fishery Commodities in The Southern Region of Central Java Using The Gravity Model Ganjar Ndaru Ikhtiagung; Faidzin Firdhaus; Septi Purwaningsih; Sasongko Adi Priyanto
KEUNIS Vol. 14 No. 2 (2026): JULY 2026
Publisher : Finance and Banking Program, Accounting Department, Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/keunis.v14i2.7160

Abstract

While having relatively high fishery production, the southern region of Central Java continues to produce poor and uneven interregional trade flows, reflecting persistent inefficiencies in market integration and spatial connectivity. This quantitative study examines the determinants of interregional trade flows of leading fishery commodities using an extended Gravity Model. Secondary data were obtained from Statistics Indonesia, the Ministry of Marine Affairs and Fisheries, and the Regional Development Planning Agency of Central Java, covering the period of 2018–2024. To explain trade volume between origin and destination regions, the model includes economic mass (Gross Regional Domestic Product), geographical distance, infrastructure quality, interregional price differentials, and market centrality. The findings demonstrate that statistically, the economic size of both the origin and destination regions has a positive and significant effect on trade flows. Distance and price differences, on the other hand, are statistically insignificant, suggesting that spatial separation and short-term price arbitrage are becoming less important. Infrastructure quality shows a positive but insignificant effect, indicating a supportive yet limited role. Meanwhile, market centrality exerts a profound and substantial impact on trade patterns. Theoretically, this study extends the Gravity Model by demonstrating that institutional market concentration outweighs traditional spatial frictions in regional fishery trade.
Peningkatan Kapasitas Produksi Bata Merah Melalui Penggunaan Mesin Cetak Bata Merah Model Extruder Dwi Sahidin; Nugroho Tri Atmoko; Septi Purwaningsih; Tri Widodo Besar Riyadi; Margono Margono; Early Yanuar Ayuningtyas; Refly Yuliana
Madani : Indonesian Journal of Civil Society Vol. 8 No. 1 (2026): Madani : Februari 2026
Publisher : Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/madani.v8i1.2992

Abstract

 This Community Service Program aims to enhance the production capacity of red bricks at UMKM Putra Mandiri, located in Mulyadadi Village, Cipari District, Cilacap Regency, through the implementation of a red brick extruder machine. The partner’s main issue was the manual production process, which limited production capacity and resulted in inconsistent brick quality. The program activities included field observations, partner discussions, training sessions, and mentoring on machine operation and maintenance. The results showed that using the extruder machine significantly increased production capacity from 100 pcs/hour to 750 pcs/hour, indicating a 750% improvement compared to manual methods. Furthermore, the  produced bricks demonstrated better uniformity, density, and strength, while reducing production time and labor intensity. The adoption of this appropriate technology not only improved productivity and competitiveness but also strengthened the partner’s independence in business operations. The implication of this activity is that technological transfer through community service programs can provide sustainable impacts on local economic development by promoting innovation, efficiency, and self-reliance among small enterprises. 
Co-Authors Dwi Sahidin Early Yanuar Ayuningtyas Faidzin Firdhaus Ganjar Ndaru Ikhtiagung Margono Margono Nugroho Tri Atmoko Refly Yuliana Sasongko Adi Priyanto Tri Widodo Besar Riyadi