Judul: Kesehatan Karang Porites Sp. Di Daerah Pariwisata Dan Non Pariwisata Di Pulau Pramuka, Kepulauan Seribu
Abstrak: Terumbu karang merupakan ekosistem yang menunjang kehidupan bagi biota lain di dalamnya, sebagai sumber plasma nutfah, pelindung wilayah pantai serta dapat mengurangi pemanasan global. Koloni massive genus Porites (Porites lutea, Porites lobata) adalah karang penting dalam menyusun struktur terumbu karang yang memiliki kemampuan beradaptasi dan memiliki toleransi terhadap tekanan fisik lingkungan seperti kekeruhan dan sedimentasi. Penelitian ini bertujuan untuk menentukan perbedaan kondisi karang Porites sp. seperti kerusakan atau keberadaan penyakit, pemutihan serta gangguan kesehatan karang di daerah pariwisata dan non pariwisata. Penelitian ini dilaksanakan di Pulau Pramuka, Kepulauan Seribu, DKI Jakarta. Pengambilan data di lakukan pada bulan Januari 2015 dengan 2 stasiun penelitian,yaitu daerah pariwisata dan non pariwisata, masing-masing stasiun terdapat 3 titik lokasi pengamatan.Metode yang digunakan adalah metode Belt Transect(20 x 2meter)dengan dilakukan tiga kali ulangan. Sebagai indikasi kesehatan karang Porites sp. di Pulau Pramuka secara keseluruhan ditemukan 10 jenis penyakit. Gangguan kesehatan karang yang terdiri dari 4 jenis penyakit karang, 2 jenis pemutihan karang, dan 4 jenis gangguan kesehatan karang. Jumlah total kasus yang ditemukan di stasiun pariwisata baik penyakit, pemutihan karang, dan gangguan kesehatan mencapai 102 kasus sedangkan untuk stasiun non-pariwisata hanya mencapai 28 kasus. Hal ini mengindikasikan kondisi karang Porites sp. yang berada di kawasan pariwisata lebih buruk diandingkan di kawasan non pariwisata
Keyword: karang, Porites sp, non pariwisata, pariwisata.

Judul: Pengaruh Kawasan Pariwisata Terhadap Kesehatan Karang di Pulau Pari, Kepulauan Seribu
Abstrak: Traveling is become a world-wide trend which has been done by many nature lovers. Indonesia, which has many islands, becomes a magnet for tourists to see its underwater beauty. One of these islands is Kepulauan Seribu. Tourism activity causes several damages to coral reef ecosystems. One of them is coral disease, which resulted in the degradation of coral reef ecosystems in the world. This study aims to measure the coral reefs' health rate based on the observation of the abundance and prevalence of coral disease, and analyze the impact of tourism activity on coral reefs' health. This study was conducted from 24 to 25 November 2013 in Pari Island, Kepulauan Seribu, with 4 scattered stations. The method used was the Belt Transect method in the area of 2 x 100 meters, and Line Intercept Transect ( LIT ) in 30 meters long with three replications. Based on the result of the research, coral bleaching phenomenon was found in tourism and non-tourism area. Meanwhile, the most common diseases and health problems in this area are ulcerative white spots (UWS) and sediment damage (SD).
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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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