Judul: Aspek Reproduksi Undur-undur Laut Hippa adactyla (Fabricius: 1787) di Pantai Berpasir, Kabupaten Cilacap.
Abstrak: Mole crab (Hippa adactyla) is a crab species from ordo Decapoda. It lives on sand coastal water sediment that affect by high and low tide. Mole crab also considered as one of important economic species. The aim of this research is to analyze egg productivity, egg diameter, egg volume and production energy of mole crab H. adactyla on sandy beach, Cilacap. The research was conducted from January to December 2013 on sandy beach, Cilacap. The total egg number of H. adactyla is 3 200±2 993 eggs. The average of egg diameter is 0,4409±0,0698 mm and the average of volume is 0,0455±0,0205 mm3. Eggs production by H. adactyla has high correlation with carapace length. The production energy in the form of female dry weight reduction is 0,04%.
Keyword: Egg diameter, egg production, egg volume, Hippa adactyla reproduction energy

Judul: Record of Mole Crab Hippa adactyla, Emerita emeritus, Emerita sp. (Crustacea; Hippidae) from Southern Coast of Sulawesi
Abstrak: Di Indonesia, undur-undur laut famili Hippidae terdistribusi dengan luas di sepanjang Pantai Barat Sumatera dan Pantai Selatan Jawa. Undur-undur laut terbagi atas tiga genera yaitu Hippa, Emerita, dan Mastigochirus. Keragaman undur-undur laut di Indonesia hanya sedikit yang telah diketahui, terutama pada kompleksitas karakteristik morfologi dan kesamaan struktur tubuh. Tujuan penelitian ini yaitu menghitung dan melaporkan keberagaman undur-undur laut (Crustacea; Hippiade) dari pantai selatan Pulau Sulawesi. Undur-undur laut dikumpulkan dari 7 lokasi pengambilan sampel di pantai selatan Pulau Sulawesi dengan menggali pasir disekitar wilayah sapuan ombak area intertidal. Sampel yang terkumpul telah diawetkan pada alkohol kemudian dibawa ke Bogor. Identifikasi spesies dilakukan berdasarkan karakteristik morfologi. Total undur-undur laut yang berhasil dikumpulkan yaitu 44 sampel. Undur-undur laut tersebut di klasifikasikan dalam dua genera, yaitu Hippa yang terdiri atas satu spesies (Hippa adactyla) dan Emerita yang terdiri atas dua spesies (Emerita emeritus dan Emerita sp.) Seluruh karakteristik morfologi Hippa adactyla dan Emerita emeritus dari Sulawesi mirip dengan spesies yang dilaporkan pada distribusi alaminya yaitu Pasifik Barat. Kedua spesies di Pantai Selatan Sulawesi ditemukan sebagai laporan distribusi baru. Sebagai tambahan pada laporan distribusi baru Emerita sp. diduga sebagai spesies novo bedasarkan bentuk karapas dengan antenula yang pendek.
Keyword: Hippa, Emerita, Sulawesi Selatan, Laporan Distribusi Baru, Spesies novo

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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