Judul: The Dependence of Drift Gillnet Fisherman on Fishing Activities in Karangantu, Banten
Abstrak: Tingginya ketergantungan terhadap kegiatan penangkapan ikan dapat menyebabkan terjadinya penurunan stok sumberdaya ikan dan perlu dukungan dari pemerintah dan pihak PPN Karangantu dalam pemberdayaan nelayan jaring rampus. Penelitian ini bertujuan mendeskripsikan keragaan unit perikanan jaring rampus di Karangantu, mengukur ketergantungan nelayan jaring rampus terhadap sumberdaya ikan di Karangantu, dan merumuskan strategi alternatif untuk mengurangi tingkat ketergantungan nelayan jaring rampus di Karangantu. Metode penelitian yang digunakan adalah metode studi kasus. Penentuan sampel menggunakan purposive sampling dengan sampel sebanyak 32 responden. Analisis data yang digunakan adalah deskriptif, skala likert untuk mengukur ketergantungan nelayan, dan SWOT untuk menyusun strategi untuk mengurangi tingkat ketergantungan nelayan jaring rampus di PPN Karangantu. Hasil penelitian menunjukkan bahwa ketergantungan nelayan jaring rampus terhadap kegiatan penangkapan ikan dikaji dalam 12 kriteria dengan skor 3,76 yang masuk dalam kategori ketergantungan yang "tinggi" pada jaring rampus <5 GT dan skor 3 dengan kategori "cukup tinggi" pada jaring rampus >5 GT., High dependence on this activity can lead to a decline in fish resources, requiring support from the government and PPN Karangantu in empowering drift gillnet fishermen. This research aims to describe the characteristics of drift gillnet fishing units in Karangantu, measure the dependence of drift gillnet fishermen on fish resources in Karangantu, and formulate alternative strategies for reducing the dependence of drift gillnet fishermen in Karangantu. The research method used is a case study method. Sample selection was done using purposive sampling with a total of 32 respondents. The data analysis utilized descriptive analysis and Likert scale to measure fishermen's dependence, and SWOT analysis to develop development strategies for reducing fishermen's dependence. The results show that the dependence of purse seine fishermen on fishing activities was assessed using 12 criteria, with a score of 3,76 indicating "high" dependence for purse seine <5 GT, and a score of 3 indicating "moderately high" dependence for drift gillnet >5 GT
Keyword: drift gillnet, fishermen's dependency, Karangantu

Judul: Tingkat Ketergantungan Nelayan Gillnet di PPI Karangsong, Kabupaten Indramayu Terhadap Sumberdaya Ikan
Abstrak: Fishermen have a high level dependency on fish resources. Therefore, it is necessary to make a job diversification as an alternative income. However, to diversify the job, it is necessary to analyze the dependency level of fishermen on fish resources. The purpose of this research are (1) to describe gillnet fisheries in PPI Karangsong, (2) to analyze the dependency level of fishermen in PPI Karangsong on fish resources. The calculation of dependency level using Multi Cryteria Analysis with the cryterias used are the number of families, time allocation, income, and expenses. Gillnet fishermen in PPI Karangsong is dominated by gillnet 0-10 GT group. Gillnet ship which less than 25 GT is still using ice to preserve the fish, while the bigger ship ( 25 GT) already using freezer. Dependency level of 0-20 GT gillnet fishermen on fish resources is higher than the > 20 GT gillnet fishermen.
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Judul: Penggunaan Teorema Homeomorphy 2-Manifold dan Teorema Euler Poincare pada Torus 𝑇�� dan Simplicial Complex 𝐾��
Abstrak: Two dimensional topological spaces are said to be homeomorphic if they have the same topological invariant, where one of topological invariant used is an Euler characteristic. Homeomorphy 2-Manifold’s Theorem and Euler Poincare’s Theorem are used to distinguish two topological spaces. Homeomorphy 2-Manifold’s Theorem uses Euler characteristic to identify two dimensional topological spaces. Euler Poincare’s Theorem is an alternative way to find Euler characteristic with Betti number, which is topological invariant as well. The objective of this paper is to investigate the homeomorphism of torus 𝑇����� and simplicial complex 𝐾�����. Topological space torus and simplicial complex 𝐾����� have the same Euler characteristic, which is two. Based on Homeomorphy 2-Manifold’s Theorem topological space torus 𝑇����� and simplicial complex 𝐾����� is homeomorphic.
Keyword: simplicial, torus, Euler, homeomorphism, topology