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All Journal Media Trend: Berkala Kajian Ekonomi dan Studi Pembangunan Journal of Aquatropica Asia Journal of Economic, Bussines and Accounting (COSTING) AFEBI Economic and Finance Review Jurnal Ekonomi dan Bisnis Dharma Andalas Jurnal Abdi Insani Buletin Ekonomika Pembangunan PENG: Jurnal Ekonomi dan Manajemen Jurnal Ilmu Ekonomi, Pendidikan dan Teknik (IDENTIK) Jurnal Ilmu Ekonomi dan Bisnis (JUKONI)
Samsuddin, M. Afdal
Unknown Affiliation
Religion Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics

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Effectiveness of Toll Road and Railway Infrastructure Development in Indonesia Samsuddin, M. Afdal; Putra, Agung Rizki
AFEBI Economic and Finance Review Vol. 7 No. 2 (2022): December
Publisher : Asosiasi Fakultas Ekonomi dan Bisnis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The purpose of this study is to analyze the effectiveness of toll roads and railways on welfare in Indonesia from the first quarter of 2006 to the fourth quarter of 2020. Toll roads are measured by the length of toll roads, railway lines are measured by the number of train passengers, and welfare is measured by GDP. per capita based on constant 2010 prices. Data analysis techniques use Vector Auto Regressive (VAR), Impulse Response Function (IRF), and Variance Decomposition (VD). The results show that toll roads are much more effective than railways in Indonesia during the study period.
BIODIVERSITY ASSESSMENT AND REINTRODUCTION – BASED CONSERVATION OF FRESHWATWER FISHES IN THE ANCIENT RIVER, BELITUNG ISLAND, INDONESIA Valen, Fitri Sil; Samsuddin, M. Afdal; Syarif, Ahmad Fahrul; Hafidz, Agus Miftahudin; Althaaf, Yafsar Murfid; Kusumah, Wanda; Yusnandar, Firman; Wijaya, Imam
Journal of Aquatropica Asia Vol 10 No 2 (2025): Journal of Aquatropica Asia
Publisher : Program Studi Akuakultur, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/q301ca02

Abstract

Freshwater fish biodiversity in Belitung Island has undergone a significant decline due to extensive tin mining activities and the rapid expansion of oil palm plantations. In response to these ecological pressures, a biodiversity assessment was conducted in 2024 in the Lenggang River system—an ancient freshwater ecosystem located in East Belitung, Indonesia. The primary aim was to document native and endemic fish species and to establish a reintroduction-based conservation strategy tailored to the river's ecological context. Field surveys recorded high ichthyofaunal diversity, from which 32 native species were selected for reintroduction based on ecological value, conservation status, endemism, and their capacity to adapt to rehabilitated habitats. Among the prioritized taxa was Gymnochanda verae, a rare and endemic species found exclusively in the Bangka–Belitung region. Other selected species include Gymnochanda verae, Desmopuntius gemellus, Osteochilus spilurus, Osteochilus flavicauda, Eirmotus insignis, Brevibora cheeyai and Aplocheilus armatus. The reintroduction initiative was designed not only to restore declining populations but also to enrich the genetic diversity of native fish communities. Importantly, all reintroduced species were confirmed to be historically present and indigenous to the Lenggang River system. The conservation strategy was further supported by habitat restoration, local community involvement, and long-term population monitoring. Preliminary results indicate positive acclimatization in restored zones, underscoring the potential of species reintroduction as an effective tool for freshwater biodiversity conservation in ancient tropical river systems. This study provides essential baseline data and offers a replicable model for integrated conservation of freshwater ecosystems in Southeast Asia.
HUBUNGAN ANTARA INOVASI PRODUK DAN KUALITAS PELAYANAN TERHADAP KEPUASAN KONSUMEN UMKM OLEH-OLEH KHAS DI KOTA PANGKALPINANG Aryansyah, Ary Fakturrachman; Samsuddin, M. Afdal
Journal of Economic, Bussines and Accounting (COSTING) Vol. 8 No. 6 (2025): COSTING : Journal of Economic, Bussines and Accounting
Publisher : Institut Penelitian Matematika, Komputer, Keperawatan, Pendidikan dan Ekonomi (IPM2KPE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31539/ctb98r35

Abstract

This study aims to analyze the effect of product innovation and service quality on customer satisfaction of souvenir-based MSMEs in Pangkalpinang City. A quantitative research approach was employed, utilizing primary data obtained from 120 consumer respondents through questionnaires and secondary data from relevant literature. Data analysis was conducted using Structural Equation Modeling-Partial Least Squares (SEM-PLS). The findings reveal that both product innovation and service quality have a positive and significant impact on customer satisfaction. Product innovation shows a stronger influence with a coefficient of β = 0.459 compared to service quality with β = 0.411. The coefficient of determination (R²) of 0.552 indicates that these two variables jointly explain 55.2% of the variation in customer satisfaction. These results highlight the crucial role of product innovation as a primary strategy for MSMEs to enhance customer satisfaction, which should be complemented by continuous improvements in service quality to strengthen competitiveness and maintain customer loyalty in the long term.
Co-Authors Agung Rizki Putra Ahmad Fahrul Syarif Albajili, Hanif Aqil Althaaf, Yafsar Murfid Amanda Ananda Lubis, Bela Andi Saputra Andini Andini, Andini Anjarsari, Nadia Aqil Albajili, Hanif Aryansyah, Ary Fakturrachman Dezta Maharani, Nuraprillia Eka Putri , Ananda Fernando, Eric Fitri Sil Valen Fitriyanti, Eka Hafidz, Agus Miftahudin Hanasari, Alhayu Ilham Maulana Kusumah, Wanda Lubis, Bela Ananda Macela Putri, Disti Maharani, Nuraprillia Dezta Mubarak, Alfan Nurdianti, Lili Rahayu, Sekar Eka Rahmadan, Alyyah Raldo, Alfio Rana, Aninda Andi Rolanda, Pynka Setefanny, Setefanny sultan Wijaya, Imam Yusnandar, Firman Zikri Rahmani