Judul: Keterkaitan Social-Ecological System (SES) sebagai Faktor Input  bagi Pengelolaan Perikanan di Kawasan Mangrove Pandansari, Brebes, Jawa Tengah
Abstrak: Ekosistem mangrove berpotensi untuk menghasilkan berbagai produk yang memiliki nilai ekonomi tinggi. Pengelolaan sumberdaya perikanan mangrove Pandansari belum sepenuhnya terintegrasi dengan baik dalam kerangka sistem sosial-ekologi. Penelitian ini bertujuan untuk menganalisis dan memetakan komponen sistem sosial-ekologi guna merumuskan strategi pengelolaan perikanan di ekosistem mangrove Pandansari. Penelitian dilaksanakan pada bulan Oktober hingga November 2023. Hasil analisis menunjukkan adanya keterkaitan yang erat antara komponen-komponen dalam sistem sosial-ekologi. Pengguna sumberdaya (RA) memiliki jumlah interaksi yang sangat kuat dibandingkan komponen SES perikanan mangrove lainnya, namun penerapan sistem tata kelola di perairan mangrove Pandansari masih lemah. Strategi pengelolaan sumberdaya perikanan mangrove dapat dilakukan dengan menjalin kerjasama yang baik antara pemerintah (RG) dengan pengguna sumberdaya (RA) untuk menghasilkan pengelolaan sumberdaya perikanan (RU) di perairan mangrove Pandansari yang berkelanjutan., Mangrove ecosystems have the potential to produce various products that have high economic value. The management of Pandansari mangrove fisheries resources has not been fully integrated within the framework of the social-ecological system. This study aims to analyze and map the components of the social-ecological system to formulate fisheries management strategies in the Pandansari mangrove ecosystem. The research was conducted from October to November 2023. The results of the analysis showed a close relationship between the components of the social-ecological system. Resource users (RA) have a very strong number of interactions compared to other mangrove fisheries SES components, but the implementation of the governance system in Pandansari mangrove waters is still weak. Mangrove fisheries resource management strategies can be done by establishing good cooperation between the government (RG) and resource users (RA) to produce sustainable management of fisheries resources (RU) in Pandansari mangrove waters
Keyword: Mangrove Fisheries, Pandansari Mangrove, Resources, Social-Ecological System

Judul: Social-Ecological System (SES) Connectivity in Padansari Mangrove Ecosystem, Kaliwlingi Village, Brebes Regency, Central Java Province
Abstrak: Abrasi yang terjadi pada tahun 2000-2008 di pesisir Desa Kaliwlingi, Kabupaten Brebes mengakibatkan hilangnya luas mangrove sejauh 7 km dengan luas 186 ha, hal tersebut disebabkan oleh konversi dan degradasi pada ekosistem mangrove. Ekosistem mangrove memiliki empat jasa layangan lingkungan, salah satunya adalah pendukung. Ekosistem mangrove Pandansari telah dikembangkan menjadi ekowisata Dewi Mangrove Sari yang bertujuan untuk mempromosikan kesadaran lingkungan dan edukasi wisata. Interaksi antara sistem ekologi dan sosial dapat menciptakan perubahan sosial dan ekologi bersamaan. Penelitian ini bertujuan untuk menganalisis keterkaitan Social-Ecological System pada ekosistem mangrove Pandansari agar dapat mengembangkan strategi pengelolaan yang berkelanjutan. Pengambilan data dilakukan pada bulan November 2023 di ekosistem mangrove Pandansari. Metode yang digunakan yaitu participatory mapping dan participatory data collection yang dilakukan dengan cara observasi lapangan dan wawancara mendalam dengan responden. Hasil menunjukkan bahwa ekosistem mangrove Pandansari (RS) tergolong dalam kategori padat dengan biota (RU) yang hidup cukup beragam. Keberadaan pengguna sumberdaya (RA) sangat berpengaruh terhadap semua kegiatan yang ada pada ekosistem mangrove Pandansari, sehingga memunculkan aturan-aturan yang sudah ditetapkan (RG). Konektivitas SES yang terjadi di mangrove Pandansari, menunjukan keterkaitan yang erat antar resources system (RS) dengan resources actor (RA) dengan banyaknya dampak yang diberikan oleh resources actor (RA)., Abrasion that occurred in 2000-2008 on the coast of Kaliwlingi Village, Brebes Regency resulted in the loss of 7 km of mangrove area with an area of 186 ha, this was caused by conversion and degradation of the mangrove forest ecosystem. The mangrove ecosystem has four environmental services, one of which is support. The Pandansari mangrove forest has been developed into the Dewi Mangrove Sari ecotourism which aims to promote environmental awareness and tourism education. Interactions between ecological and social systems can create concurrent social and ecological change. This research aims to analyze the relationship between the Social Ecological System in the Pandansari mangrove ecosystem in order to develop sustainable management strategies. Data collection was carried out in November 2023 in the Pandansari mangrove ecosystem. The methods used were participatory mapping and participatory data collection which was carried out by means of field observations and in-depth interviews with respondents. The results show that the Pandansari (RS) mangrove ecosystem is classified in the dense category with quite diverse living biota (RU). The existence of resource users (RA) greatly influences all activities in the Pandansari mangrove ecosystem, giving rise to established regulations (RG). The SES connectivity that occurs in the Pandansari mangrove shows a close relationship between the Resource System (RS) and Resource Actors (RA) with many impacts provided by Resource Actors (RA).
Keyword: social-ecological system, mangrove, konektivitas, jasa ekosistem

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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