Judul: Pengaruh Ransum Kombinasi terhadap Energi dapat Dicerna (DE) dan Total Digestible Nutrient (TDN) pad Sapi Brahman Cross, Peranakan Ongole dan Madura
Abstrak: Penelitian ini dilakukan di Bagian Ilmu Gizi Ternak Pedaging dan Kerja Fakultas Peternakan, Institut Pertanian Bogor selama 291 hari, mulai dari tanggal 29 oktober 1984 sampai dengan 14 Agustus 1985. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ransum kombinasi antara jerami padi dan konsentrat, rumput lapang dan konsentrat terhadap konsumsi energi, energi fases, energi dapat dicerna (DE), anakan Ongole dan Madura.
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Judul: Pengaruh ransum kombinasi terhadap koefisien cerna bahan kering, protein, lemak dan serat kasar pada sapi brahman cross, peranakan ongole dan madura
Abstrak: Penelitian ini dilakukan di Bagian Ilmu Gizi Ternak Pedaging dan Kerja Fakultas Peternakan Institut Pertanian Bogor selama 291 hari, mulai dari tanggal 29 Oktober 1984 sampai dengan 14 Agustus 1985. Tujuan penelitian ini adalah untuk mengetahui pengaruh pemberian ransum kombinasi antara konsentrat dengan jerami padi dan konsentrat dengan rumput lapangan terhadap koefisi- en cerna bahan kering, protein, lemak dan serat kasar pada sapi Brahman Cross, Peranakan Ongole dan sapi Madura. Ternak yang dipakai sebanyak 54 ekor sapi jantan yang berumur antara 2,54 tahun, terdiri dari 18 ekor sapi Brahman Cross yang didatangkan dari Ujung Pandang, 18 ekor sapi Peranakan Ongole dan 18 ekor sapi Madura yang didatang- kan dari Jawa Timur. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap Berblok dengan pola Faktorial 3 x 2 dengan 3 ulangan. Bangsa sapi dikelompokkan menjadi 3 kelompok dan sekaligus sebagai ulangan. Faktor yang pertama adalah per- sentase hijauan yang terdiri dari 3 tingkatan (30%, 40% dan 50%); faktor yang kedua adalah jenis hijauan yang ter- diri dari rumput lapangan dan jerami padi; interaksi antara persentase hijauan dengan jenis hijauan (Ransum) ada enam yaitu Ransum I, II, III, IV, V dan VI. Data yang diperoleh dianalisa dengan Sidik Peragam dengan bobot badan awal ko- lekting sebagai variabel pengiring. Pengujian dilakukan dengan Uji Jarak Duncan. Perbedaan persentase hijauan dalam ransum tidak berpe- ngaruh nyata terhadap koefisien cerna bahan kering, protein, serat kasar, konsumsi bahan kering, pertambahan bobot badan dan efisiensi makanan, tetapi berpengaruh sangat nyata (P0.01) terhadap koefisien cerna lemak. Koefisien cerna lemak pada penggunaan hijauan 50% pada ransum sangat nyata…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