Judul: Pengaruh Pemberian Pupuk Kandang Ayam Pada Transplanting Setek Cabang Satu Buku dan Dua Buku Bambu Ampel Hijau (Bambusa vulgaris Schrader Ex Wendland) Asal Kultur Air
Abstrak: Penelitian ini dilakukan untuk mengetahui pengaruh pemberian pupuk kandang ayam, jumlah buku setek dan interaksinya terhadap keberhasilan transplanting setek cabang bambu ampel hijau (Bambusa vulgaris Schrader ex Wendland) di lapang dari umur 2 sampai dengan 28 MST. Penelitian dilaksanakan mulai bulan Nopember 1994 sampai dengan bulan Juni 1995, di kebun Percobaan IPB Cikarawang Bogor dengan ketinggian 240 m diatas permukaan laut.
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Judul: Pengaruh jumlah buku cabang terhadap keberhasilan pembibitan setek cabang bambu ampel hijau (Bambusa vulgaris Schard var. vulgaris) bambu ampel kuning (Bambusa vulgaris Schard var. vitata) dan bambu ori (bambusa bambos (L.) Voss) pada kultur air
Abstrak: Pengaruh Jumlah Buku Cabang Satu dan Dua terhadap Keberhasilan Pembibitan Setek Cabang Bambu Ampel Hijau (Bambusa vulgaris Schard var. Vulgaris), Bambu Ampel Kuning (Bambusa vulgaris Schard var. Vitata) dan Bambu Ori (Bambusa bambos (L.) Voss) pada Kultur Air (Di bawah bimbingan MUNIF GHULAMAHDI dan SANDRA ARIFIN AZIZ). Percobaan ini bertujuan untuk mengetahui pengaruh jumlah buku cabang dan jenis bambu terhadap kerberhasilan pembibitan dan persentase tumbuh setek cabang bambu pada kultur air. Percobaan dilakukan di Kebun Percobaan Cikarawang Institut Pertanian Bogor, mulai Oktober sampai November 1995 dengan ketinggian lokasi 240 m di atas permukaan laut. Percobaan menggunakan Rancangan Acak Lengkap Faktori- al terdiri atas dua faktor yaitu jenis bambu dan jumlah buku cabang. Jenis bambu terdiri atas Bambu Ampel Hijau (A), Bambu Ampel Kuning (A) dan Bambu Ori (A3). Jumlah buku terdiri atas setek cabang satu buku (B1) dan setek cabang dua buku (B2). Terdapat enam kombinasi perlakuan dengan masing-masing empat ulangan, jadi terdapat 24 satuan percobaan. Setiap satuan percobaan terdiri atas 20 setek cabang. Persentase tumbuh bambu ampel (55.00%) lebih tinggi daripada persentase tumbuh bambu kuning (31.25 %) dan bambu ori (0.00%). Perlakuan jenis bambu berpengaruh nyata pada semua variabel yang dicobakan kecuali terhadap bobot kering tunas dan setek cabang bertunas. Jumlah buku berpengaruh nyata pada panjang tunas, bobot kering tunas dan setek cabang bertunas. Sedangkan interaksi antara kedua perla- kuan cabang nyata terhadap jumlah tunas, panjang akar dan setek cabang bertunas.
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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