Judul: Pengembangan Perikanan Purse Seine Di PPI Blanakan Subang
Abstrak: In a way to discover how to develop a sustainable fishing industry, it’s necessary to studying it through multiple aspects such as biological, engginering, social and economic. Purpose of this research is to doing a feasibility study of purse seine fishery business and also describe the performance of purse seine fishery in PPI Blanakan Subang, West Java. Blanakan village have a fairly fisheries economic activity, marked by busy fisheries auction. The common fishing gear in PPI Blanakan Subang is purse seine. The method used in this research is descriptive method with case study type, while respondents sampling method used was purposive sampling. The purse seine vessels used as sample in research have dimension with provison, length: 15-20 m, width: 5-6 m, dept: 2-3 m draft: 0,75-1,5 m. Fish agregating device is also used in purse seine operation, while fishing base location is in Java Sea, 60-100 miles from shorline with a depth over 40 meters. Composition of purse seine catches are dominated by small pelagic fish include: Fish Seads (Decapterus spp.), Black Pomfret (Formio niger), Indo-pacific Mackerels (Rastrelliger spp.), Trevally (Selaroides spp.), Fringescalles Sardinella (Sardinella fimbriata), Eastern Title Tuna (Euthynnus spp.) and Squid (Loligo spp.). The requirements investment costs to start is Rp 398.350.000,00. Fixed costs that must be paid every year is Rp 124.795.000,00. Variable costs bear by owner each year is Rp 394.380.000,00. Total Revenue (TR) acquired during the year amounted to Rp 1.149.478.923,18 and the Total Cost (TC) issued during the year amounted to Rp 925.461.434,67 so Profits (π) obtained by owner for one year of Rp 224.017.448,51. Based on calculations from the analysis effort and investment has been made then this bussines is still profitable and feasible to be developed, so that may be a consideration if some entrepreneurs interested in starting businesses purse seine fishery.
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Judul: Keragaan Perikanan Purse Seine di PPI Muara Angke, Jakarta Utara
Abstrak: PPI Muara Angke is one of the fisheries landing sites which is located in DKI Jakarta. Fishing gear that is often used in PPI Muara Angke is purse seine. The aim of this study was to analyze the technical, biological, social and economic aspects of purse seine fishery in PPI Muara Angke. The method of this research was a survey method by analyze each aspects descriptively. Technically, purse seiner in PPI Muara Angke have size 25-125 GT and operate in the North region of the Java Sea, Bangka Belitung, Karimata Strait, Natuna Sea, South region of the China Sea and the others. The number of fisherman is 30-40 people. Biologically, the fishing gear has high catch species diversity with a low selectivity. Socially, purse seine fisheries in PPI Muara Angke implement sharing system, money deposits and wages catch bait. It is can also be well received by the local community. Economically, purse seine fisheries in PPI Muara Angke gain huge profits and having a good investment prospecting.
Keyword: purse seine, survey method, Muara Angke

Judul: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular