Judul: Pertumbuhan dan Reproduksi Kepiting Bakau (Scylla tranquebarica Fabricus, 1798) di Perairan Segara Anakan Bagian Barat.
Abstrak: Kepiting bakau (Scylla tranquebarica) merupakan salah satu komoditas perikanan penting di Segara Anakan Bagian Barat dengan informasi biologi yang masih terbatas. Penelitian ini bertujuan untuk menganalisis aspek pertumbuhan dan reproduksi. Penelitian dilaksanakan pada bulan Mei 2016- Januari 2017 di perairan Segara Anakan Bagian Barat. Total 226 individu kepiting bakau hasil tangkapan bubu memiliki lebar karapas rata-rata antara 62,98-140,34 mm. Pola pertumbuhan kepiting bakau jantan dan betina masingmasing adalah alometrik positif dan alometrik negatif. Kepiting bakau jantan memiliki nilai faktor kondisi maksimal pada bulan November dan betina pada bulan Mei. Pertumbuhan kepiting bakau jantan lebih lambat dibanding kepiting bakau betina. Nisbah kelamin kepiting bakau (jantan/betina) tertinggi pada bulan Mei. Kepiting bakau jantan matang gonad lebih cepat dibanding betina. Puncak musim pemijahan kepiting bakau diduga terjadi di bulan Mei. Potensi reproduksi kepiting bakau berkisar antara 912 300-2 881 400 butir. Gamet kepiting bakau jantan dan betina berkembang seiring dengan peningkatan kematangan gonad.
Keyword: pertumbuhan, reproduksi, Scylla tranquebarica, Segara Anakan Bagian Barat

Judul: Keragaan Reproduksi Kepiting Bakau (Scylla spp.) di Perairan Indonesia
Abstrak: Kepiting bakau (Scylla spp.) merupakan sumberdaya perikanan penting di Indonesia dan permintaan terhadap komoditi kepiting bakau cenderung meningkat baik di pasar lokal maupun mancanegara. Namun, dalam pemenuhannya masih mengandalkan hasil tangkapan dari alam. Penelitian aspek reproduksi penting dilakukan karena belum ada penelitian yang khusus untuk mempelajari keragaan reproduksi kepiting bakau di masing-masing daerah di Indonesia. Informasi biologi reproduksi kepiting bakau masih sebatas berasal dari penelitian yang dilakukan terhadap populasi kepiting bakau yang ada di lokasi tertentu. Penelitian ini bertujuan untuk mengkaji keragaan (performance) reproduksi jenis-jenis kepiting bakau (Scylla spp.) di Indonesia melalui pengamatan aspek reproduksi yang meliputi tingkat kematangan gonad (TKG), fekunditas, diameter telur, histologi gonad, dan hubungan antara lebar karapas dengan berat tubuh.
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Judul: Algorithm construction of HLI hash function
Abstrak: Cryptography is a study of mathematical techniques related to aspects of information security regarding on confidentiality, data integrity, entity authentication, and data origin authentication. Data integrity is a service, which is associated with the conversion of data carried out by unauthorized parties. To maintain data integrity, one can use hash functions. An hash function is a computationally efficient function to map an arbitrary length bitstring to a fixed length bitstring called as hash value. The use of hash function in maintaining the information integrity and authentication is in digital signatures, virus protection, and software distribution. Illustration of the hash function in the integrity and authentication of information that is emailed as follow. The sender sends the information and hash value to the recipient. If the hash value of the information is equal to the hash value that is sent by the sender, then information has not been changed. Otherwise the information has been changed. An hash function has two properties, one way and collision resistance. An hash function is called one way if it is computationally infeasible to find any input such that when given any hash value . Meanwhile an hash function is called collision resistant if it is computationally infeasible to find any two inputs where such that . The purpose of this study is to construct a HLI hash function algorithm, to analyze the speed and security of the hash functions as a results of construction. Furthermore, it is to compare it with SWIFFT. Hash function is constructed based on the result of algebraic operations on modular polynomial ringwith . Modular polynomial ring noted as is a set of all polynomials of degree at most with coefficients in . can be represented as a set of integer vector of modulo in dimension . So, it is simple to implement in a computer. In vector operations, is lattice . Furthermore, alattice that is defined from certain polynomial ring is called ideal lattice. HLI hash function is consists of addition and multiplication algorithm in the ring. Addition algorithm consists of sumation operations of modulo and multiplication consists of multiplication operations of modulo . Generally, algorithm of HLI hash function consists of multiplication operations of modulo and addition operations of modulo . However, if the input is binary number then multiplication algorithm only consists of multiplication operation of modulo , so algorithm of HLI hash function consists of multiplication operations of modulo and addtion operations of modulo . An hash function is secured if it has two properties, i.e., one way and collision resistance. HLI hash function hash is one way, it is following the proof of Micciancio. It is has collision resistant because of polynomial is irreducible over and monic. Moreover, it is proved that for every unit vector , the vector is small vector. If the input of hash function is a binary number then HLI hash function only involves addition operations of modulo . So the time that used almost same with SWIFFT. The excellence of HLI hash function is the key size smaller than SWIFFT. This effect on
Keyword: hash function, modular polynomial ring, lattice