Judul: Keterkaitan Ekosistem Mangrove dengan Produksi Ikan di Desa Pagirikan dan Pabean Ilir, Kecamatan Pasekan, Indramayu, Jawa Barat
Abstrak: Mangrove sebagai salah satu komponen ekosistem pesisir memegang peranan yang cukup penting, baik di dalam memelihara produktifitas perairan pesisir maupun di dalam menunjang kehidupan penduduk di wilayah pesisir tersebut. Di Kabupaten Indramayu, penurunan luasan mangrove masih terjadi sampai sekarang. Menurunnya luasan mangrove berarti menurunnya kualitas habitat yang akan berakibat pada menurunnya produksi ikan. Penelitian ini bertujuan menentukan pengaruh perubahan ekosistem mangrove terhadap produksi ikan pada kawasan mangrove di pesisir Indramayu. Metode analisis data yang digunakan adalah metode deskriptif korelasional dengan menggunakan pendekatan kuantitaif. Data produksi dari kedua desa tersebut dibandingkan nilai rata-rata dan standar deviasinya (α = 5%) (Barnard et al. 1993). Data penelitian yang dikumpulkan berupa data produksi ikan dari kedua desa dan data kondisi mangrove di kedua desa. Hasil pengamatan menunjukkan produksi rata-rata dari kedua desa berbeda nyata sehingga dapat disimpulkan bahwa terdapat keterkaitan antara kondisi ekosistem mangrove dengan produksi ikan.
Keyword: ikan, mangrove, Pabean Ilir, Pagirikan, produksi

Judul: Keterkaitan Ekosistem Mangrove dengan Keanekaragaman Ikan di Pabean Ilir dan Pagirikan, Pasekan Indramayu, Jawa Barat
Abstrak: Mangrove ecosystem has high productivity because it has the ability as a nutrient trap, which supports aquatic biota, especially fish. The purpose of this study was to determine the relationship between mangrove densities with total fish catch, number of fish species, and fish diversity. The data collections were mangrove condition, fish, physical, and chemical parameters. The results showed that mangrove density in Pabean Ilir Village higher than Pagirikan village. The highest importance value index of mangrove was Rhizophora mucronata and Avicennia marina. Total number of fish catch in two locations were 1093 individuals, consisting of 80 species belonging to 38 families. The dominant fish species were Ambassis nalua, Johnius belangerii, Leiognathus equulus, and Platycephalus indicus. There was positive relationship between the mangrove density with the total number of fish catch, number of fish species, and fish diversity in Pabean Ilir Village and Pagirikan Village, Pasekan Indramayu, West Java.
Keyword: mangroves., Indramayu, fish, Bogor Agricultural University (IPB)

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.
Keyword: