Judul: Peralatan Keselamatan Kerja pada Perahu Slerek di PPN Pengambengan, Kabupaten Jembrana, Bali
Abstrak: Fishing is one of the most dangerous activities in the world. About 80% of ship accidents occur due to human error. The availability and proper use of safety equipment can minimize the risk. This study aims to identify the suitability of safety equipment used on Slerek boat in PPN Pengambengan, Bali accordance with international and national standards, and describes the role of relevant institutions in order to increase the fishermen safety. Surveys and direct observation methods were used in this study. Aspects of the study were the types of safety equipment, numbers of safety equipment, and the suitability of equipment which must be taken. The lack of equipment and awareness about safety, and do not comply with the national standards for boat less than 24 meters length will directly affect the fishermen safety. The lack of regulations on small boat safety showed that the fishermen safety in fishing activities in Indonesia have not been considered and there is no clear policy from local and central government
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Judul: Identifikasi Keselamatan Kerja Nelayan pada Aktivitas Payang di Palabuhanratu, Sukabumi Jawa Barat
Abstrak: The study aimed to describe the fishing activity of the boat seine also to identify the potential hazard or the working risk on the operating of the boat seine in Palabuhanratu. A case study of safety was used on one of the boat seines in Palabuhanratu. Descriptive analysis was used to describe the activities of pre-operation, operation process until post-operation process of the boat seine. Detail description included of the fishing unit and the fishing activity on the boat seine fishery. Job safety analysis (JSA) was used to examine the working method and to determine the potential hazards at every step of the boat seine activity. Based on the result, it was known that the activity of the operation of the boat seine consisted of 13 events, which was divided into 3 stages. The first was pre-operation, which were from preparation on the fishing base, transfer to the ship, sailing to the fishing ground and the gear preparation. The second was operation process, which were setting and hauling the fishing gear. The third was post-operation, which were handling the catch, sailing towards the harbor and then transferring the equipment and the catch from the ship to the dock. JSA analysis result showed that the risk arising was the category of accident which were not severe, severe and very severe. The risk caused by the lack of safety equipment, the tool operation and the skill of the boat seine fisherman. Identified potential hazards at payang activity is 92% in the minor accident class category. Potential hazards in accident class category have a percentage of 8% and the percentage of severe accident class category is 0%. The risks of potential hazards in boat seine operation are caused by the lack of safety equipment, tools and fishermen skills.
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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