Judul: Analisis usaha perikanan alat penggaruk kerang "Dredge gear" dan kemungkinan pengembangannya di Kecamatan Tanjung Balai Kabupaten Asahan Sumatera Utara
Abstrak: Usaha perikanan alat penggaruk kerang "Dredge Gear" merupakan suatu uit bisnis, sehingga sebelum diambil keputusan untuk mengembangkan usaha dikaji dulu bagaimana kelayakan usaha tersebut. Dalam rangka pengembangan usaha di masa akan datang perlu dilakukan analisis usaha dan analisis kelayakan usaha. Analisis usaha dilakukan untuk mengetahui keuntungan dari usaha pengumpulan kerang melalui analisis keuntungan usaha, analisis imbangan Penerimaan dan biaya (R/C) dan analisis Break Event Point (BEP). Analisis kriteria investasi dilakukan dengan melakukan penilaian terhadap NPV, Net B/C dan IRR. Penelitian ini bertujuan untuk mengetahui analisis keuntungan yang diperoleh dan usaha perikanan alat penggaruk kerang "Dredge Gear" dan mengetahui analisis kelayakan secara finansial serta pengembangan usaha perikanan alat penggaruk karang dari alat penggaruk kerang berupa "Tojok" ke "Tank Thailand. Berdasarkan analisis kriteria investasi didapat nilai NPV tanpa pembiayaan sebesar Rp 53.746.323.26 dan dengan pembiayaan sebesar Rp 80.430.079,97, Net B/C tanpa pembiayaan sebesar 1.31 dan dengan pembiayaan sebesar 1,81 serta IRR tanpa pembiayaan sebesar 41,11 % dan dengan pembiayaan sebesar 69,40 %- Berdasarkan perhitungan tanpa dan dengan pembiayaan menunjukkan NPV > 0, Net B/C 1 dan IRR> discount rate maka usaha perikanan alat penggaruk kerang "Dredge Gear" layak untuk dikembangkan.
Keyword: Dredge Gear, business analysis, business feasibility analysis

Judul: Efisiensi Teknis dan Ekonomis Alat Tangkap Garuk dan Peluang Pengembangannya di Desa Rawameneng Blanakan Subang Jawa Barat
Abstrak: Dredge gear is the most common fishing gear in Rawameneng Blanakan Village. This fishing gear have good productivity for catching coockles. Productivity of dredge gear is related to the ability of fishing gear to provide the profit for fishermen. The objectives of this research were to determine technical and economical efficiency of dredge gear and to determine the possibility to developed dredge gear in Rawameneng Village. Productivity of dredge gear was technically analiyzed and economically. The research showed that technical efficiency of dredge gear in Rawameneng village ranged from 0,22 to 6,41. In term of economical efficiency, dredge gear contributed the revenue which ranged from Rp 39.790.000 to Rp 108.468.000. Furthermore, Return of Investment of dredge gear, Revenue-Cost Ratio and Payback Period were 299%, 4,36 and 0,33, respectively.
Keyword: coockles Rawameneng Village., dredge gear, economical efficiency, Technical efficiency

Judul: Pelabelan Super Vertex Magic
Abstrak: Super vertex magic labeling is labeling on graph with is a set of edges mapped into and is a set of vertices mapped into . It has a vertex magic labeling in which and represents the size and order of the graph respectively. This manuscript proves that paths, cyclics, and disjoint union of cyclics have a super vertex magic labeling. There are four theorems to be discussed. The first theorem proves that path is super vertex magic if and only if is odd and . The second theorem proves that cyclic is super vertex magic if and only if is odd. The third theorem proves that bijection function from an edge set onto of graph can be extended to a super vertex magic labeling if and only if the set amount of edge label that incidents with a vertex in the graph, consists of sequential integers as many as vertices in the graph. The fourth theorem proves that disjoint union of the cyclics consists of cyclics with each cyclic has vertices is super vertex magic if and only if and are odd.
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