Judul: Performans domba lokal yang digembalakan di padang rumput, Brachiaria humidicola UP3 Jonggol dengan penambahan dedak padi
Abstrak: Pemberian dedak padi kepada domba dipelajari untuk mendapatkan pengaruhnya terhadap pertambahan bobot badan, kondisi fisik dan tingkah lakunya selama 9 minggu. Penelitian ini dilakukan di UP3 Jonggol, dengan tujuan untuk memperbaiki performans domba lokal yang digembalakan di UP3 Jonggol. Pemberian dedak padi tersebut masing-masing adalah 0g (R0), 50g (R1), 100g (R2) dan 150g (R3). Data yang diperoleh dianalisis dengan analisis sidik ragam dan dilanjutkan dengan uji Duncan. Hasil penelitian menunjukkan bahwa penambahan dedak padi sampai taraf 150 gram terhadap pertambahan bobot badan secara statistik tidak berpengaruh. Selama penelitian bobot badan serta skor kondisi tubuh mengalami peningkatan. Hal ini menunjukkan bahwa dedak padi dapat memperbaiki serta mempertahankan performans produksi domba. Tingkah laku antara domba kontrol dengan yang diberi dedak padi, baik dalam kandang maupun di padang penggembalaan tidak terlalu berpengaruh.
Keyword: Domba, Dedak padi, Padang rumput, Brachiaria humidicola

Judul: Tingkah Laku Merumput dan Pertambahan Bobot Badan Domba dan Kambing di Tiga Jenis Padang Rumput
Abstrak: Penelitian ını dilakukan di areal padang rumput Unit Pendidikan dan Penelitian Peternakan Jonggol (UP3J), Fakultas Peternakan Institut Pertanian Bogor di Desa Singosari Kecamatan Jonggol Kabupaten Bogor. Penelitian dimulai pada bulan Februari sampai dengan April 1988. Curah hujan di UP3J selama penelitian sebesar 454.1 mm dan rataan kelembaban sebesar 74 2%. Rataan suhu pagı hari adalah 32.9°C dan sore hari 30.3°C, suhu harian terendah 26.5°C dan suhu harian tertinggi 37°c. Materi penelitian menggunakan 12 ekor domba ekor ge- muk dan 12 ekor kambing kacang yang terpagi atas dua kelompok bobot badan. Padang rumput yang digunakan sesuai dengan kapasitas tampung masing-masing padang rumput, yaitu padang rumput Brachiaria decumbens, padang rumput alam dan Setaria splendida. Rancangan percobaan yang digunakan untuk mengetahui perbedaan tingkah laku dan pertambahan bobot badan domba dan kambing digunakan rancangan acak kelompok pola faktorial 2 x 3 dan untuk mengetahui respons perlakuan antar perlakuan dipergunakan Uji Jarak Duncan. Tingkah laku merumput pada domba sama dengan kambing, terutama pada tingkah laku lama merumput, jumlah periode merumput, lama istirahat dan jumlah periode istirahat. Tingkah laku ruminası pada domba berbeda dengan kambing, terutama di padang rumput Setaria splendida. Waktu ruminasi kambing lebih lama darı domba. Pertambahan bobot badan domba dan kambing paling baik pada padang rumput Setaria splendida, kemudian Brachiaria decumbens dan yang terjelek pada padang rumput alam. Konsumsi rumput paling banyak Setaria splendida, kemudian Brachiaria decumbens dan yang paling sedikit alam….
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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