Judul: Regenerasi Jaringan Kotiledon, dan Pucuk Kecambah Stylosanthes guyanensis cv Cook Secara in vitro
Abstrak: Penelitian dilakukan di Laboratorium Kultur Jaringan Jurusan Budi Daya Pertanian, Fakultas Pertanian IPB pada awal November 1985 hingga awal November 1986. Penelitian ini bertujuan mempelajari pengaruh zat pengatur eumbuh auksin dan sitokinin terhadap pertumbuhan dan perkembangan jaringan kotiledon, hipokotil dan pucuk kecambah 2. suyanensis cv Cook dalam medium padat. Bahan tanaman yanq digunakan sebagai eksplan pada percobaan I ialah jaringan kotiledon, hipokotil dan pucuk kecambah 2. auvanensis cv COOK, berumur satu mi'nggu. Percobaan I terdiri atas dua zat pengatur tumbuh, BA dan NAA, masing-masing dengan konsentrasi 0.0, 1.0, 2.0 dan 3.0 mg/l BA dan 0.0, 1.0 dan. 2,O m g / l NAA.
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Judul: Induksi pengakaran pucuk Asparagus densiflorus myers. Dalam kultur in vitro
Abstrak: Penelitian bertujuan untuk mengetahui pengaruh kombinasi auksin NAA dengan sitokinin 2 iP dan retardan ancymidol dengan 2 iP terhadap pertumbuhan dan perkembangan jaringan tanaman Asparagus densiflorus Myers., terutama jaringan akar. Penelitian dilakukan di Laboratorium Kultur Jaringan Tanaman, Jurusan Budi Daya Pertanian, Fakultas Pertanian, Institut Pertanian Bogor. Penelitian berlangsung dari bulan Maret sampai Juli 1992. Penelitian terdiri atas dua percobaan terpisah. Percobaan I terdiri atas dua faktor perlakuan, yaitu NAA dan 2 iP. Perlakuan NAA terdiri atas tiga taraf konsentrasi: 0.05 mg/1, 0.10 mg/1, 0.50 mg/1, dan perlakuan 2 iP terdiri atas dua taraf konsentrasi: 0.10 mg/1 dan 0.50 mg/1. Percobaan II terdiri atas faktor perlakuan ancymidol dan 2 iP. tiga Konsentrasi ancymidol yang digunakan terdiri atas taraf: 0.10 mg/1, 0.50 mg/1, 1.00 mg/l, dan taraf konsentrasi 2 iP adalah 0.10 mg/1 dan 0.50 mg/1. Media dasar yang digunakan pada kedua percobaan tersebut adalah media Murashige dan Skoog (MS). Percobaan menggunakan rancangan acak lengkap yang disusun secara faktorial dengan 10 ulangan…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