Judul: Hubungan Antara Patogeesa Penyakit Gumboro dengan Umur, Tingkat Komplemen dan Lesio pada Ayama
Abstrak: Penyakit Gumboro pertamakali dikenal dengan nama Avian Nefrosis karena menyebabkan peradangan ginjal , ditemukan oleh Cosgrove di daerah Delaware Amerika Serikat. Penyakit ini kemudian dikenal dengan nama Infectious Bursa1 Disease (IBD) karena menyebabkan penyingkiran bursa Eabricius dan dikenal pula dengan nama penyakit Gumboro, sesuai dengan nama tempat pertamakali penyakit ini ditemukan. Penyakit ini mempunyai arti penting karena sifat imunosupresifnya sehingga akibat sekunder penyakit ini lebih merugikan dibandingkan dengan akibat langsung penyakitnya sendiri.
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Judul: Pengaruh infectios bursal disease terhadap beberapa panyakit pada ayam
Abstrak: Infectious Bursal Disease (IBD) adalah penyakit viral yang menyerang ayam muda umur 3-6 minggu, tergolong diplornavirus, menyebabkan kerusakan pada organ-organ limfoid seperti bursa Fabricius, thymus, limpa dan cecal tonsil. Penyakit ini dikenal pula dengan penyakit Gumboro dan avian nephrosis. Gumboro adalah nama tempat penyakit ini ditemukan. Penyakit Gumboro diketahui sebagai penyakit yang menyebabkan penekanan (immunosuppresive) pada sistem kekebalan. Dalam tulisan ini dibahas tentang pengaruh penyakit Gumboro terhadap penyakit-penyakit lain pada ayam yaitu penyakit Marek, infectious laryngotracheitis, Newcastle disease, infectious bronchitis dan coccidiosis. Dari hasil penelitian yang dilakukan oleh beberapa orang akhli, dapat ditarik suatu kesimpulan bahwa penyakit Gumboro menyebabkan turunnya titer antibodi tubuh terhadap beberapa penyakit tersebut di atas kecuali terhadap coccidiosis. Terhadap coccidiosis penyakit Gumboro diduga menghalangi penyerapan obat anticoccidia di dalam lumen usus. Bursa Fabricius tidak memegang peranan yang penting dalam sistem kekebalan terhadap coccidiosis. Penyakit Gumboro telah diketahui ada di Indonesia dan merupakan masalah bagi peternak atau mereka yang bertanggung jawab terhadap kesehatan ternak. Penyakit ini menekan sistem kekebalan, sehingga akibat yang ditimbulkannya lebih berbahaya daripada penyakitnya sendiri. Di samping itu, pengobatan terhadap penyakit Gumboro belum menunjukkan hasil yang memuaskan.
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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