Judul: Efficiency of Fishing Supply Production Factors on Drift Gillnet Fishing Vessels of 41-60 GT in Tegalsari Coastal Fishing Port
Abstrak: Dalam kegiatan penangkapan ikan, permasalahan yang sering kali terjadi ialah kurangnya perbekalan saat operasi kegiatan penangkapan. Penelitian ini bertujuan untuk mengidentifikasi kondisi umum, menghitung kebutuhan perbekalan aktual, dan menganalisis efisiensi faktor produksi perbekalan melaut unit penangkapan jaring insang hanyut berukuran 41-60 GT di Pelabuhan Perikanan Pantai (PPP) Tegalsari. Penelitian dilakukan melalui observasi secara langsung dan wawancara terhadap nelayan, pengurus, dan pemilik kapal menggunakan metode purposive sampling. Hasil penelitian ini menunjukkan bahwa unit penangkapan tersebut beroperasi selama 2-3 bulan dengan hasil tangkapan utama berupa ikan tongkol dan ikan tenggiri. Jenis perbekalan yang digunakan ialah perbekalan operasional yang terdiri dari solar, oli, air bersih, dan perbekalan konsumsi yang terdiri dari konsumsi dan lainnya. Perbekalan melaut yang dibawa masih tergolong tidak efisien, karena efisiensi Nilai Produksi Marginal (NPM) yang diperoleh masing-masing sebesar 1,153 pada solar, 10,866 pada air bersih, dan 0,010 pada perbekalan konsumsi., In fishing activities, a common issue that often occurs is the lack of supplies during the operation of fishing activities. This research aims to identify the general conditions, calculate the actual supply needs, and analyze the efficiency of fishing supplies on drift gillnet fishing vessels sized on 41-60 GT at the Tegalsari Coastal Fishing Port. The research was conducted through direct observation and interviews with fishermen, managers, and ship owners using the Purposive Sampling method. The results of this study indicate that the fishing vessels operate for 2-3 months with the main catch being skipjack tuna and mackerel. The types of supplies used are operational supplies consisting of diesel, oil, fresh water, and consumable supplies consisting of food and others. The supplies carried are still classified as subefficient, as evidenced by the Marginal Production Value (MPV) efficiency obtained each of the variabels at 1.153 for diesel, 10.866 for fresh water, and 0.010 for consumable supplies.
Keyword: drift gillnet, drift gillnet fishing supply, efficiency

Judul: Efficiency Supply Requirement from Fishing Supplies in a 6 GT Trolling Fishing Unit in Palabuhanratu Fishing Port
Abstrak: Perbekalan merupakan salah satu faktor produksi yang sangat dibutuhkan dalam menunjang keberhasilan operasi penangkapan termasuk pada unit penangkapan pancing tonda 6 GT. Permasalahan yang dihadapi yaitu masih terdapat kekurangan ataupun kelebihan perbekalan yang dibawa pada saat melakukan operasi penangkapan. Penelitian ini bertujuan mendeskripsikan kondisi umum, menganalisis efisiensi kebutuhan perbekalan melaut pada unit penangkapan pancing tonda 6 GT. Penelitian yang dilaksanakan di Pelabuhan Perikanan Nusantara Palabuhanratu dilakukan dengan metode survei menggunakan teknik wawancara serta pengambilan sampel menggunakan teknik purposive sampling. Analisis data yang digunakan adalah analisis deskriptif, kuantitatif dan kualitatif. Faktor produksi solar (X1) 0,040, oli (X2) 0,706, air bersih (X3) 0,043, es (X4) 0,007, dan perbekalan konsumsi (X5) 0,000 dengan nilai Fhitung > Ftabel artinya secara simultan berpengaruh signifikan terhadap produksi hasil tangkapan. Adapun secara parsial hanya oli yang tidak berpengaruh secara signifikan. Penggunaan faktor produksi solar, oli, air bersih dan es masih perlu ditambahkan, sedangkan penggunaan kebutuhan konsumsi perlu dikurangi agar produksi hasil tangkapan lebih efisien., Supplies are the necessary production factors to support the success of fishing operations, including the 6 GT trolling fishing unit. The deficiency or excess of supplies is one of the problems of fishing operations. This study aims to explain the general conditions, analyze the efficient supply requirement from fishing supplies in a 6 GT trolling fishing unit. The study used a survey and interview method located at the Palabuhanratu Nusantara Fishing Port, with a purposive sampling technique. Data analysis included quantitative, qualitative and descriptive analysis. The result showed that the production factor for diesel (X1) is 0.040, oil (X2) is 0.706, clean water (X3) is 0.043, ice (X4) is 0.007, and consumption supplies (X5) is 0.000 with a value of Fcount > Ftable has simultaneously significant effect on fishing production. Meanwhile, only oil did not have a significant effect partially. For the efficient fishing production, the use of production factors such as diesel, oil, clean water, and ice must be increased, while the use of consumption needs must be reduced.
Keyword: faktor produksi, efisien, pancing tonda, PPN Palabuhanratu

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