Judul: Suatu Studi tentang Pelabuhan Perikanana Pantai Ternate dan Kemungkinana Pengembangannya
Abstrak: Tujuan dari penelitian ini adalah untuk mempelajari keadaan Pelabuhan Perikanan Pantai Ternate serta fasilitas-fasilitas yang ada dan mempelajari peranan Pelabuhan Perikanan serta mencari faktor-faktor yang dapat menunjang pengembangannya.
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Judul: Suatu studi tentang pelabuhan perikanan pantai ternate dan kemungkinan pengembanganya
Abstrak: Tujuan dari penelitian ini adalah untuk mempelajari keadaan Pelabuhan Perikanan Pantai Ternate serta fasilitas-fasilitas yang ada dan mempelajari peranan Pelabuhan Perikanan serta mencari faktor-faktor yang dapat menun- jang pengembangannya. Pelabuhan Perikanan Pantai Ternate terletak di Desa Bastiong, Kecamatan Pulau Ternate Kabupaten Maluku Utara, Maluku dengan posisi pada 127° 22' 06" Bujur Timur dan 0° 45' 53" Lintang Utara. Kabupaten Maluku Utara merupa- kan daerah kepulauan yang terdiri dari 320 pulau dengan luas lautan 107 381 km² atau 78% dari luas seluruh wila- yah. Potensi produksi pertahun sebesar 2.5 ton per km². 2 Usaha penangkapan ikan dan kegiatan ekonomi perikanan lebih banyak dilakukan di daerah Ternate karena telah merupakan daerah maju. Selain itu fishing ground cukup dekat dan potensi produksi masih tinggi. Melihat hal ini maka pembangunan Pangkalan Pendaratan Ikan ditingkat- kan menjadi Pelabuhan Perikanan. Fasilitas-fasilitas yang ada di Pelabuhan Perikanan Pantai Ternate meliputi fasilitas pokok, fasilitas fungsional dan fasilitas tambahan. Fasilitas pokok meliputi dermaga, daratan pelabuhan, jalan dan drainase. Fasili- tas fungsional meliputi gedung pelelangan ikan, slipway, pabrik es, fish storage, cool box, instalasi bahan bakar minyak, instalasi air bersih, instalasi listrik, teleko- munikasi, perbengkelan, tempat pengolahan, Balai Pertemuan Nelayan, kantor administrasi, pos penjagaan, pagar keliling, tempat parkir dan WC umum. Fasilitas tambahan meliputi perumahan dan fasilitas olahraga. Fasilitas-fasilitas yang tidak terdapat di Pelabuhan Perikanan Pantai Ternate adalah break water, alur pelayaran, kolam pelabuhan, rambu-rambu pelayaran, menara pengawas, kantin poliklinik, penginapan nelayan, musholla dan perkantoran pengusaha perikanan. Sistem penjualan yang biasanya berlaku adalah melalui pelaksana penjualan. Sistem ini cenderung merugikan nelayan, tetapi nelayan sangat tergantung pada pelaksana penjualan. Pelelangan merupakan salah satu usaha bagi stabilitas harga dan peningkatan pendapatan nelayan…dst
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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