Judul: Sistem Penunjang Keputusan Kelayakan Investasi Agroindustri Udang Vaname Berbasis Web dengan Pola Pembiayaan Syariah
Abstrak: Shrimp is a product of fishery that most widely traded in the world. With a market share of approximately 14%, shrimp trade diversified from fresh shrimp to frozen shrimp and processed shrimp. In 2007, world demand for frozen shrimp reached 1,673,756 tons while in 2008 the world demand for shrimp declined 18.24%. Factors affecting the demand for shrimp are market conditions, quality of shrimp, and financial invesment. Investment in the shrimp agro-industry is still lower than other fisheries sector, because its having high risk. Decision support system of investment feasibility for Vaname shrimp agroindustry is a web based decision support system, which will assist the decision makers especially businessman and investor in making investment feasibility quickly, precisely, and accurately. Financing schemes that studied is the Islamic financing scheme, because the schemes more related to capacity and characteristic of small and medium enterpries, as well as public awareness of halal products usage. The main purpose of this research is to determine the pattern of Islamic financing schemes for the optimal of profit and loss sharing in mudharabah and musyarakah schemes. Especially to develop islamic financing model that can measure the financing benefit and feasibility level for the non interest based in Islamic financing businessman. Decision support system of investment feasibility for vaname shrimp with islamic financing schemes consists of two models, the first is shrimp cultivation and the second is for frozen shrimp agro-industry. Each model consist of several sub model, wich are financial analysis, analysis of the financing risk level, the minimum profit of investors analysis, analysis of the optimal revenue sharing, profit rate financing for entrepreneurs and investors, analysis of financing benefits level, and the last is analysis of the Islamic financing schemes feasibility. The finansial analysis used to know the value from parameter of invesment elegibility from finance aspect. The financing risk level used to determine the risk level from the scheme. The minimum profit of investors analysis used to look for the goals to advantage minimize which must be obtained by investors from the investment. The analysis of the optimal revenue sharing used to look for the optimal proportion of sharing holder which can be used from defrayal scheme. The profit rate financing for entrepreneurs and investors analysis used to know the benefit level for entrepreneur and LKS from a number of invesment. Analysis of financing benefits level used to determine the benefit level from defrayal scheme. And the Islamic financing schemes feasibility used to determine the feasibility level of the scheme. Vanamest.Org is the web based decision support system, which have some benefits, include easily in acces for make simulation can done by anywhere and anytime. In the other hands, this application is provided by the correction and update the data facility, so the user can earn easily manipulation of various data that becomes assumption in the feasibility scheme simulation. In Vanamest.Org, there are four especial sub menu, consist of sub financial input, risk evaluastion, benefit evaluation, and feasibility evaluation. Each sub menu representing the function of each sub model from database management system in Vanamest.Org. The simulation
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Judul: Evaluate Floating Net Cages of Vaname Shrimp (Litopenaeus vannamei) Business Development in Seribu Islands
Abstrak: Udang vaname merupakan udang introduksi yang berasal dari Amerika yang permintaannya terus meningkat di pasar dunia. Budidaya udang ini di Indonesia semakin banyak diminati karena udang ini memiliki kelangsungan hidup dan ketahanan terhadap penyakit yang lebih baik. Tingginya permintaan udang vaname mendorong pemerintah untuk meningkatkan produksi sehingga dapat bersaing di pasar dunia. Budidaya udang vaname dengan keramba jaring apung masih terdapat kelemahan dibandingkan dengan teknologi sebelumnya yaitu, tambak. Budidaya udang vaname keramba jaring apung sebelumnya masih belum pernah dilakukan sehingga kelangsungan hidup masih rendah, pengelolaan input dan output yang masih belum optimal. Oleh karena itu perlu ditinjau terkait beberapa aspek yang terdapat pada usaha udang vaname. Penelitian ini bertujuan untuk (1) Menganalisis kelayakan dari pengembangan usaha udang vaname keramba jaring apung pada masing-masing aspek (finansial, ekologi dan sosial) ?, dan (2) Menganalisis alternatif pengembangan budidaya udang vaname dengan teknologi keramba jaring apung laut ? Metode pengambilan responden secara sengaja (purposive). Analisis data yang digunakan, yaitu analisis finansial dengan melihat kinerja operasional dan perbandingan usaha yang telah ada sebelumnya yang berdasarkan pada opportunity cost serta aspek ekologi dan sosial yang menggunakan analisis Rapid Appraisal Fisheries sebagai pendukung yang menilai kelayakan dari aspek ekologi dan sosial. Untuk melakukan pengembangan suatu usaha, maka perlu adanya evaluasi terhadap suatu usaha. evaluasi dilakukan untuk menilai bagaimana suatu proyek berjalan sesuai pada saat awal perencanaan yang ditanamkan pada suatu usaha bisa menguntungkan. Dari hasil penelitian diperoleh bahwa kelayakan dari pengembangan usaha udang vaname pada aspek finansial yang masih menunjukkan nilai B/C < 1. Hal ini dikarenakan secara aktual produksi dari usaha udang vaname terbesar pada tahun 2016 sebesar 438 kg/Tahun ini masih jauh dari nilai BEP yaitu 886 kg/Tahun. Secara finansial usaha udang vaname masih belum layak. Apabila dibandingkan dengan altenatif usaha lainnya dapat dilihat bahwa opportunity cost yang hilang saat memilih usaha udang vaname yaitu sebesar Rp. 84 740 000/Th. Aspek ekologi dengan aspek sosial dengan nilai indeks keberlanjutan pada kategori cukup berkelanjutan maka dapat dikategorikan layak untuk pengembangan usaha udang vaname keramba jaring apung laut., Vannamei shrimp is an introduced shrimp from America whose demand continues to increase in the world market. Cultivation of this shrimp in Indonesia is increasingly in demand because this shrimp has better survival and resistance to disease. The high demand for vaname shrimp encourages the government to increase production so that it can compete in the world market. The cultivation of vaname shrimp with floating cages still has weaknesses compared to the previous technology, namely ponds. Previously, floating cages vannamei shrimp cultivation has never been carried out so that the survival is still low, the management of input and output is still not optimal. Therefore, it needs to be reviewed related to several aspects contained in the vaname shrimp business. This study aims to (1) analyze the feasibility of developing a vannamei shrimp business in each aspect (financial, economic, ecological and social), and (2) to analyze the alternative development of vannamei shrimp farming using floating cages technology. The method of taking respondents intentionally (purposive). The data of analysis used, namely financial analysis by looking at operational performance and comparisons of existing
Keyword: Vaname shrimp, Floating net cages, Development, Business feasibility

Judul: Approximation of the Median of Poisson Distribution Using the Relation of Poisson-Gamma Distribution
Abstrak: A major drawback of median is that median cannot usually be defined in closed form, even in the cases where their distribution functions are known. This study gives an approximation of the closed form for the median of the Poisson distribution by using the relation of Poisson-Gamma distribution. The approximation uses elementary techniques based on the monotonicity of certain sequences involving tail probabilities of the Poisson distribution and the Central Limit Theorem. Furthermore, a closed form expression for the mean absolute deviation 􀜧|􀜰􀰒 􀵆 􀜯􀝁􀝀􁈺􀜰􀰒􁈻| is also studied. The median is relevant because of the fact that it minimizes the mean absolute deviation of a Poisson random variable (􀜰􀰒􁈻 by considering median as central tendency.
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