Judul: Community Based Business Development for Mangrove Restoration in Banyuasin Regency South Sumatra
Abstrak: Kerusakan hutan mangrove terus-menerus akan berdampak negatif bagi lingkungan dan masyarakat pesisir. Restorasi mangrove yang mencakup upaya meningkatkan pendapatan masyarakat menjadi penting. Penelitian ini menganalisis penyebab dan dampak kerusakan mangrove, menilai persepsi dan tingkat pengetahuan masyarakat, mengidentifikasi potensi bisnis, juga merancang model bisnis dan menganalisis kelayakan finansialnya. Penelitian dilakukan di Desa Sungsang IV dan Desa Marga Sungsang, Kabupaten Banyuasin, Sumatra Selatan. Pengumpulan data dilakukan melalui wawancara dan diskusi kelompok terfokus. Analisis data dilakukan menggunakan Kanvas Model Bisnis, analisis finansial dan analisis SWOT. Penyebab kerusakan mangrove adalah tingginya aktivitas antropogenik dengan dampak yang dirasakan masyarakat adalah banjir dan berkurangnya hasil tangkapan nelayan. Potensi ekowisata mangrove dikembangkan menjadi model bisnis eko-eduwisata mangrove dan wisata kuliner lokal. Bisnis ini layak dijalankan dengan NPV Rp 180.148.622, BCR 1,3, IRR 52,88%, dan PBP 1,7 tahun., Continuous destruction of mangrove forests will have a negative impact on the environment and coastal communities. Mangrove restoration which includes efforts to increase community income is important. This research analyzes the causes and impacts of mangrove damage, assesses community perceptions and level of knowledge, identifies business potential, also designs business models and analyzes financial feasibility. The research was conducted in Sungsang IV Village and Marga Sungsang Village, Banyuasin Regency, South Sumatra. Data collection was carried out through interviews and focus group discussions. Data analysis was carried out using the Business Model Canvas, financial analysis and SWOT analysis. The cause of mangrove damage is high anthropogenic activity with the impact felt by the community being flooding and reduced fishing catches. The potential for mangrove ecotourism is developed into a business model for mangrove ecotourism and local culinary tourism. This business is financially feasible with an NPV of IDR 180,148,622, BCR 1.3, IRR 52.88%, and PBP 1.7 years.
Keyword: Analisis finansial, Analisis SWOT, Bisnis berbasis masyarakat, Kanvas Model Bisnis, Restorasi Mangrove

Judul: Analysis of the development of mangrove products as alternative livelihoods of coastal communities (Case Study of Pantai Bahagia Village, Muara Gembong District, Bekasi Regency, West Java)
Abstrak: Muara Gembong merupakan daerah di Kabupaten Bekasi yang mengalami perubahan lingkungan akibat konversi hutan mangrove. Daerah yang paling terdampak adalah Desa Pantai Bahagia. Sebanyak 63% masyarakatnya mengalami penurunan pendapatan dan menjadikan produk olahan mangrove sebagai pendapatan alternatif. Penelitian ini bertujuan untuk (1) mengidentifikasi produk olahan mangrove, (2) menganalisis kelayakan usaha, (3) menganalisis pengaruh produk olahan mangrove terhadap kelestarian hutan mangrove, dan (4) menganalisis strategi pengembangan produk olahan mangrove. Metode penelitian yang digunakan adalah metode studi kasus, sedangkan metode analisis data yang digunakan yaitu Weighted Sum Model (WSM), analisis pendapatan, Revenue Cost of Ratio (R/C), Return of Investment (ROI), Payback Period (PP), deskriptif kualitatif serta Strengths, Weaknesses, Opportunities and Threats (SWOT). Berdasarkan hasil penelitian, dodol original, stik balado, dan sirup merupakan olahan mangrove yang paling layak untuk dikembangkan. Usaha produk olahan mangrove layak dilakukan berdasarkan kriteria kelayakan finansial. Produk olahan berpengaruh terhadap kelestarian hutan mangrove melalui perubahan pola pemanfaatan, pengelolaan ekosistem, dan kesediaan masyarakat untuk menanam mangrove. Strategi pengembangan yang dapat dilakukan yaitu menentukan segmentasi konsumen, optimalisasi pasar digital, bekerjasama dengan reseller dan dropshipper serta membuat produk olahan mangrove menjadi naik kelas., Muara Gembong is an area in Bekasi Regency that is experiencing environmental changes due to the conversion of mangrove forests. The most affected area is Pantai Bahagia Village. As many as 63% of the community experienced a decrease in income and made processed mangrove products as an alternative income. This study aims to (1) identify mangrove products, (2) Muara Gembong is an area in Bekasi Regency that is experiencing environmental changes due to the conversion of mangrove forests. The most affected area is Pantai Bahagia Village. As many as 63% of the community experienced a decrease in income and made processed mangrove products as an alternative income. This study aims to (1) identify processed mangrove products, (2) analyze business feasibility, (3) analyze the effect of processed mangrove products on the preservation of mangrove forests, and (4) analyze the strategy for developing mangrove processed products. The research method used is case study method, while the data analysis method used is Weighted Sum Model (WSM), income analysis, Revenue Cost of Ratio (R/C), Return on Investment (ROI), Payback Period (PP), qualitative descriptive and Strengths, Weaknesses, Opportunities and Threats (SWOT). Based on the research results, original dodol, balado sticks, and syrup are the most suitable mangrove products to be developed. The business of processing mangrove products is feasible based on financial feasibility criteria. Processed products affect the sustainability of mangrove forests through changes in utilization patterns, ecosystem management, and community willingness to plant mangroves. Development strategies that can be carried out are determining consumer segmentation, optimizing the digital market, collaborating with resellers and dropshippers and making processed mangrove products to be promoted.
Keyword: Alternative livelihood, Development analysis, Mangrove forest conservation, Mangrove forest conversion, Mangrove products

Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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