Judul: Analisis Kerentanan Nelayan Jaring Arad yang Berbasis di Pangkalan Pendaratan Ikan Cituis, Kabupaten Tangerang, Provinsi Banten
Abstrak: Nelayan jaring arad di Pangkalan Pendaratan Ikan Cituis tergolong nelayan tradisional yang hasil tangkapannya bergantung pada musim. Jika saat angin muson barat, nelayan sulit untuk melaut karena gelombang dan curah hujan tinggi ditambah lagi telah terjadinya degradasi sumberdaya ikan. Kejadian tersebut menunjukkan, terdapat ancaman kerentanan tehadap mata pencahariannya sebagai nelayan jaring arad di PPI Cituis. Tujuan penelitian ini untuk mengetahui tingkat kerentanan nelayan jaring arad di PPI Cituis dan menyusun strategi penurunan tingkat kerentanan nelayan jaring arad di PPI Cituis. Penelitian dilakukan dengan cara wawancara terhadap nelayan pemilik kapal dan ABK jaring arad. Instrumen FLIRES Check yang terdiri dari 6 bidang digunakan untuk mendapatkan data tingkat kerentanan nelayan jaring arad di PPI Cituis, yang selanjutnya dianalisis menggunakan analisis kerentanan. Hasil penelitian menunjukkan bahwa status kerentanan nelayan jaring arad ‘cukup resilien’ dengan rata-rata nilai indeks kerentanan sebesar 2,67 bagi pemilik kapal dan 2,46 bagi ABK. Adapun strategi penurunan tingkat kerentanan nelayan jaring arad di PPI Cituis diantaranya pelatihan usaha alternatif saat musim paceklik untuk ABK; sistem pembagian bantuan pemerintah untuk nelayan di PPI Cituis perlu diperbaiki; dan mengadakan pelatihan untuk pemilik kapal serta ABK secara berkala dan pendampingan saat pengaplikasian langsung hasil dari pelatihan., Fishers of the mini bottom trawl in the Cituis Fishing Port are traditional fishers groups that depend on the monsoon season to fish. During the west monsoon season, the fishers are difficult to catch fish due to the high water waves and rainfall and the decreasing fish resources in this fishing ground. Thus, this study was conducted to evaluate the threat vulnerability of livelihood the mini bottom trawl fishers based in Cituis Fishing Port. This research aims to assess the vulnerability level of mini bottom trawl fishers based in Cituis Fishing Port, and to formulate strategies to decrease the vurnarebility level of mini bottom trawl fishery in the area, accordingly. An interview technique was conducted in this study to the ship owners and crews. The FLIRES Check instrument was primarily used in this study, and it consisted of six aspects in the assessment. The vulnerability analysis was used as the basis to formulate the strategy to decrease the fisher's vulnerability. The results of this study show that the status of mini bottom trawl fishermen's vulnerability was ‘sustainable enough’/ ‘moderate’, with an average index value of 2.67 for the ship owners and 2.46 for the crews. The strategies to decrease the vulnerability level of mini bottom trawl fishery are: developing an alternative livelihood training for the crew during the west monsoon season; improving the distribution system of government assistance for fishers in Cituis Fishing Port; and conducting regular training for ship owners and crews and government assistance in applying the training results.
Keyword: FLIRES Check, kerentanan, nelayan jaring arad, Pangkalan Pendaratan Ikan Cituis

Judul: Kerentanan Nelayan Jaring Ciker di Jetis Kabupaten Cilacap
Abstrak: Jaring ciker adalah alat tangkap sejenis gillnet yang dioperasikan di dasar perairan. Jaring ini banyak digunakan oleh nelayan skala kecil di Jetis Kabupaten Cilacap. Nelayan skala kecil umumnya rentan terhadap berbagai perubahan ekonomi, sosial, dan lingkungan yang akan mempengaruhi keberlanjutan mata pencaharian. Tujuan penelitian ini adalah mendeskripsikan perikanan jaring ciker, mengidentifikasi dan menghitung faktor-faktor kerentanan yang mempengaruhi kerentanan dan tingkat resiliensi perikanan jaring ciker, serta memberikan rekomendasi untuk meningkatkan resiliensi perikanan jaring ciker. Penelitian ini menggunakan metode survey secara accidental sampling kepada 100 nelayan jaring ciker. Data dikumpulkan melalui wawancara menggunakan kuesioner FLIRES check yang dianalisis menggunakan analisis leverage dan analisis deskriptif. Hasil penelitian menunjukkan bahwa nelayan melakukan penangkapan harian menggunakan kapal 3 GT dengan mesh size jaring antara 1,9-2 inchi. Kerentanan nelayan jaring ciker dipengaruhi oleh enam aspek meliputi aspek alam, sumberdaya manusia, fisik, keuangan, sosial, dan kelembagaan. Nelayan berada pada status yang rentan dengan nilai rata-rata pemilik kapal 2,36 dan ABK 2,25. Pemilik kapal paling rentan pada aspek kelembagaan sehingga program penyuluhan dan pemberian bantuan teknologi penangkapan bisa membantu pemilik kapal memaksimalkan hasil tangkapan. ABK paling rentan pada aspek fisik sehingga program penyediaan kredit sarana penangkapan dan pelatihan pengolahan ikan disertai modal usaha bisa membantu ABK lebih mandiri., Bottom gillnet is a gillnet-type fishing gear that is operated at bottom of water. This net is widely used by small-scale fishermen in Jetis Cilacap Regency. Small-scale fishermen are generally vulnerable to various economic, social, and environmental changes that will affect the sustainability of their livelihoods. The purposes are to describe bottom gillnet fishery, identify and calculate factors that influence vulnerability and resilience level bottom gillnet fishery, and provide recommendations to improve resilience of bottom gillnet fishery. This study uses survey method by accidental sampling to 100 bottom gillnet fishermen. Collecting data through interviews using FLIRES check questionnaire which was analyzed using leverage and descriptive analysis. Results showed that fishermen do daily fishing using 3 GT vessels with mesh size 1,9-2 inches. Vulnerability bottom gillnet fishermen are influenced by six aspects including aspects of nature, human resources, physical, financial, social, and institutional. Fishermen are in vulnerable status on an average value of 2,36 owners and 2,25 crews. Owners are most vulnerable to institutional aspect, so extension and provision fishing technology can help owners maximize catch. Crews are most vulnerable to physical aspect, so providing credit fishing facilities and fish processing training accompanied by business capital can help crews more independent.
Keyword: bottom gillnet, Jetis, small scale fishery, vulnerability

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