Judul: Pengaruh pemberian domolit, kalsit dan inokulasi terhadap pertumbuhan vegetatif dan kandungan N, Ca, Mg pada podsolik merah kuning jasinga
Abstrak: Serangkaian percobaan pot di rumah kaca dan analisa di laboratorium, telah dilakukan untuk mengamati perbedaan pengaruh dolomit dan kalsit terhadap pertumbuhan vegetatif dan kandungan Ca dan Mg bagian atas tanaman kedele, aktivitas Rhizobium japonicum yang ditunjukkan oleh kemam- puannya membentuk nodul dan kandungan N tanaman, serta mengamati perubahan pH, basa-basa dapat dipertukarkan dan kejenuhan Al. Rancangan yang digunakan dalam percobaan ini adalah Rancangan Acak Lengkap dengan perlakuan Faktorial dengan 3 ulangan. Dilakukan dua seri percobaan yaitu seri kalsit dan seri dolomit. Taraf dolomit yang digunakan yaitu 0, 6.54, 13.08 dan 19.62 ton/ha. Taraf kalsit yang digunakan yaitu 0, 7.06, 14.12 dan 21.18 ton/ha. Perlakuan inokulasi dilakukan dua taraf yaitu tanpa inokulasi dan dengan inoku- lasi. Inkubasi dilakukan selama 30 hari dan setelah itu dilakukan penanaman tanaman kedele varietas Orba. Pupuk dasar yang digunakan yaitu 100 kg Urea/ha, 200 kg TSP/ha, dan 380 kg KCl/ha. Percobaan berlangsung selama enam minggu, kemudian tanaman dipanen dan dilakukan analisa terhadap N bagian atas dan akar serta Ca dan Mg bagian atas tanaman. Kebutuhan kapur ditetapkan berdasarkan metoda Al kwadrat dd. ...
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Judul: Pengaruh pemberian dolomit dan pemupukan tembaga terhadap pertumbuhan vegetatif dan kandungan N,P,K, dan Cu tanaman kedelai ( Glycine max ( L ) Merr ) pada tanah podsolik merah kuning, Jasinga
Abstrak: Serangkaian percobaan telah dilaksanakan di rumah kaca dan laboratorium Jurusan Tanah, Fakultas Pertanian, Institut Pertanian Bogor yang berlangsung dari bulan Januari sampai Agustus 1984. Tujuan percobaan ini adalah untuk mengetahui pengaruh pemberian dolomit dan pemupukan tembaga terhadap pertumbuhan vegetatif dan kandungan N, P, K, dan Cu tanaman kedelai (Glycine max (L) Merr) pada tanah Podsolik Merah Kuning, Jasinga. Perlakuan yang dicobakan adalah pemberian dolomit dengan dosis 0.0, 0.5, dan 1.0 setara SMP dan pemupukan tembaga dengan dosis 0, 4, 8, dan 12 ppm tembaga. Sedangkan varietas kedelai yang dipakai adalah Orba.
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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