Judul: Performa Ayam Broiler yang Diberi Ekstrak Daun Babadotan (Ageratum conyzoides Linn.) dalam Air Minum dan Kepadatan Kandang Berbeda.
Abstrak: Penelitian ini bertujuan untuk mengevaluasi efek pemberian ekstrak daun babadotan dalam air minum pada kepadatan kandang yang berbeda dalam meningkatkan performa ayam broiler. Penelitian ini menggunakan ayam broiler strain Cobb sebanyak 300 ekor. Ayam dipelihara selama empat minggu dan diberikan air minum dengan atau tanpa penambahan anti stres sintetik (P1 dan P2), 5% dan 10% ekstrak daun babadotan (P3 dan P4) pada kepadatan kandang yang berbeda, yaitu 10 dan 15 ekor m-2. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) pola faktorial 4 x 2 dengan 3 ulangan. Analisis data menggunakan analisis ragam ANOVA dan uji lanjut Duncan. Hasil penelitian menunjukkan bahwa tidak ada interaksi antara penambahan ekstrak daun babadotan dengan kepadatan kandang yang berbeda terhadap performa ayam broiler. Hasil juga menunjukkan bahwa 5% dan 10% penambahan ekstrak daun babadotan (P3 dan P4) dalam air minum menghasilkan performa yang sama dengan yang diberikan air minum dengan atau tanpa anti stres sintetik (P1 dan P2). Kepadatan kandang 15 ekor m-2 nyata menurunkan (P<0.05) performa ayam broiler. Penambahan ekstrak daun babadotan 10% mampu meningkatkan income over feed and chick cost (IOFCC) ayam broiler yang dipelihara pada kepadatan kandang 15 ekor m-2.
Keyword: ayam broiler, ekstrak daun babadotan, kepadatan kandang, performa

Judul: Performa Ayam Broiler yang Diberi Tepung Daun Torbangun (Coleus amboinicus Lour) dalam Pakan.
Abstrak: Penelitian ini bertujuan untuk mengkaji pengaruh pemberian tepung daun torbangun dalam pakan terhadap performa ayam broiler. Ayam yang digunakan yaitu ayam strain Cobb sebanyak 200 ekor dengan umur 15 hari. Penelitian menggunakan Rancangan Acak Lengkap (RAL) terdiri dari 4 taraf perlakuan (taraf tepung daun torbangun 0%, 1%, 2%, dan 3%) dengan 4 kali ulangan. Peubah yang diamati yaitu konsumsi pakan, bobot badan akhir, pertambahan bobot badan, konversi pakan, mortalitas, Income Over Feed and Chick Cost (IOFCC), persentase karkas, dan persentase organ dalam. Data yang diperoleh dianalisis ragam (ANOVA). Perbedaan antar rataan perlakuan digunakan uji Duncan. Berdasarkan nilai mortalitas dan konversi pakan pada penelitian ini, pemberian tepung daun torbangun terbaik didapat pada pemberian tepung daun torbangun sebanyak 2%.
Keyword: ayam broiler, daun torbangun, performa, persentase organ dalam

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