Judul: Analisis pengembangan usaha pembesaran ikan bandeng di desa Bipolo Kecamatan Sulamu, Kabupaten Kupang Provinsi Nusa Tenggara Timur
Abstrak: Salah satu usaha budidaya yang cukup berkembang di Nusa Tenggara Timur adalah usaha pembesaran ikan Bandeng dengan sentra produksi berada di desa Bipolo, Kabupaten Kupang. Usaha pembesaran ikan Bandeng di Desa Bipolo masih dilakukan secara tradisional, sehingga menyebabkan hasil produksi ikan Bandeng yang dihasilkan masih tergolong rendah. Untuk dapat meningkatkan produksi ikan Bandeng perlu diadakan pengembangan usaha pembesaran ikan Bandeng dari tradisional ke arah tradisional plus. Sebelum diadakan usaha pengembangan usaha pembesaran ikan Bandeng, maka perlu dilakukan analisis finansial sehingga diketahui layak atau tidaknya usaha pembesaran ikan Bandeng di Desa Bipolo untuk dikembangkan. Selain itu, perlu diadakan kajian terhadap peluang dan kendala yang berasal dari aspek alam, aspek teknis, aspek sumberdaya alam, aspek sumberdaya manusia, dan aspek finansial agar dapat menghasilkan alternatif pengembangan yang perlu dilakukan.
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Judul: Analisis pengembangan armada perikanan tangkap di perairan kabupaten Kupang Nusa Tenggara Timur
Abstrak: Perairan Kabupaten Kupang merupakan perairan yang cukup potensial, memiliki berbagai jenis ikan, baik itu jenis ikan pelagis besar, pelagis kecil maupun demersal. Batasan wilayah yang cenderung berdekatan dua negara yakni Timor Leste dan Australia dapat nenimbulkan masalah, armada penangkapan ikan yang ada di dominasi oleh armada skala kecil dengan tingkat teknologi yang masih rendah, untuk menekan tingkat pelanggaran dan konflik diantara nelayan yang selalu melakukan aktivitas penangkapan dengan menggunakan kapal-kapal kecil maupun kapal-kapal berukuran sedang yang cenderung sampai ke perbatasan, maka perlu dilakukan penataan terhadap kebijakan pengelolaan dan pengembangan armada penangkapan yang ada sedini mungkin. Tujuan dari penelitian ini adalah untuk mendapatkan suatu model konseptual pengembangan armada perikanan tangkap di Kabupaten Kupang. Model surplus produksi digunakan untuk menduga jumlah hasil tangkapan yang diperbolehkan (Total Allowable Catch (TAC)) berdasarkan Tangkapan Maksimun Lestari (Maximun Sustainable Catch (MSY)) dan model Strength, Weaknesses, Opportunity dan Threat (SWOT) digunakan untuk menentukan strategi pengembangan armada, Goal Programming (LGP) Analisis Hierarchi Process (AHP) digunakan untuk menetapkan prioritas strategi pengembangan, dan Code of Conduct For Reponsible Fisheries (CCRF) digunakan untuk menyesuaikan pengembangan armada yang akan dikembangkan dengan mempertimbangkan kelestarian lingkungan, sumberdaya ikan serta keberlanjutan usaha dan analisis finansial yang digunakan untuk menentukan kelayakan usaha.
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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