Judul: Pemanfaatan Sumberdaya Terumbu Karang untuk Perikanan Tangkap dan Pariwisata di Pulau Pasi, Kabupaten Kepulauan Selayar, Provinsi Sulawesi Selatan
Abstrak: Coral reef ecosystem has been crucial for the community near the ecosystem especially in fisheries and tourism sector. Coral reef condition plays an important role not only for ecological but also economic sustainability. The study is tried to apply valuation technic for the aim of knowing the ecological condition and valuing coral reef ecosystem focussing on utility of fisheries and tourism in Pasi Island. Coral condition in Pasi Island is influencing those sectors, whereas the impact of MPA could increase the coral cover and fish abundancy that also influence the fisheries and tourism sectors. The possibility to implement entrance fee is tried to evaluate by asking tourist willingness to pay as a form of community awareness. Based on the effect of production method and travel cost method, we calculate economic value from fisheries about Rp. 2 665 016 072/ha/year and economic value from tourism about Rp. 53 700 760.31/ha/year. Using contingent valuation method, willingness to pay for entrance fee is Rp. 23 653.65,-/ person, therefore the benefit from entrance fee implementation worth over 146 million Rupiah per year. MPA implementation is observed have a positive effect on fisheries economic value.
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Judul: Economic valuation of coral reefs in the Seribu Islands marine protected area
Abstrak: Seribu Islands National Park (TNKpS) is a Marine Protected Area (MPA) which protects a number of the ecosystem such as coral reef, mangrove, seagrass and so on. Coral reefs is one of the most important ecosystems in this area which provides various benefits such as goods and services. These benefits are of high value and critical importance to the local economies in Seribu islands. These value were frequently overlooked or underappreciated by the local communities. In other words, the coral reefs ecosystem true value is still undervalued by the local communities. As a consequence the degradation and many other environmental damages were occurred. Economic valuation is an instrument that can be used to assess how much the communities appreciate goods and services from the ecosystem by giving 'price tag' and compared with its ecosystem true value. The main purpose of this research was to-assess coral reef's economic value which consist of use value and non use value. The use values derived from fisheries and tourism, meanwhile the non use values were derived from enviromental protection value and option value. The economic values were assessed using several approaches, namely change in productivity method, market prices, CVM, and Von Neumann-Morgenstern (option price). The results of the study showed that use value of tourism and fishery was 106.49 billion rupiah, and non-use value, included environmental protection value and option value, was 316.85 billion rupiah. Hence, the total economic value was 423.34 billion rupiah for total area 4,397.06 hectare or 96.28 million rupiah per hectare per year. However, the estimation for long-term (50 years) economic value in terms of Present Value (PV) to the local population will be much higher than the existing value. The estimated value will be of 5,162.23 billion rupiah on average or 1.18 billion rupiah per hectare. To secure these values, There are several policies can be implemented, such as increasing public awareness, rentcapture mechanism, institutional mechanism, 'localized economic scale' policy, and knowledge-based economic strenghtening.
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Judul: Construction of Strongly Optimal Binary Linear Code with Minimum Distance 9 and 11
Abstrak: A binary linear code of length n over q F is a subspace of n q F . A code has three parameters that attached to it, namely length, dimension, and minimum distance. A code with length n, dimension k and minimum distance d is often called [n, k, d ]-code. Usually, when two parameters are given, then we want to find a code that has the best value for the last parameter. Based on Gilbert- Varshamov bound, if a [n, k, d ]-code exists and can not be expanded, we call it a strongly optimal code. In this paper, we construct strongly optimal code with minimum distance 9 and 11. In constructing the code, we created a theorem and algorithm based on Gilbert-Varshamov bound before we implement the algorithm to MAPLE programming language. Because of computational limitations, the program can only construct up to k = 10 for d = 9 and k = 12 for d = 11.
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