Judul: Pengaruh berbagai konsentrasi pupuk kotoranayam terhadap ukuran dan nilai nutrisi daphnia sp
Abstrak: PB Uni Penelitian ini yang bertujuan untuk mengetahui pengaruh dosis pupuk kotoran ayam terhadap ukuran dan nilai nutrisi Daphnia sp. (protein, 1 emak, Karbohidrat dan energi), telah dilakukan selama kurang lebih dua bulan yaitu dari bulan Maret sampai April 1987. Tempat penelitian ini di Laboratorium "Aquatic Biology" Biotrop, Jalan Raya Tajur Km 6 Bogor, Jawa Barat. Biota uji yang dipakai adalah anak Daphnia sp. yang diperoleh dari Daphnia sp. betina dewasa yang kan pada wadah sediaan selama 1 X 24 digunakan Kotoran adalah ayam jam. negeri diinokulasi- Pupuk yang yang sudah dikeringkan. Wadah yang digunakan adalah silinder kaca dengan volume 20 liter, sedangkan media yang digunakan adalah air sumur pompa yang telah diaerasi selama 24 jam. Selama penelitian berlangsung media tetap diaerasi. Perlakuan berupa konsentrasi pupuk yang diberikan, yaitu 1,6; 2,4; 3,2 4,0 gram/liter. Penempatan wadah dilakukan secara acak dengan masing-masing 3 wadah untuk setiap sedangkan pengamatan hasil perlakuan, secara komposit (tanpa ulangan). Anak-anak Daphnia sp. Yang didapat dari kultur sediaan dibagikan merata ke dalam wadah percobaan berdasarkan metode perbandingan volume. Setelah dibagikan, kepadatan anak Daphnia sp. adalah 200 ekor per wadah. sp. Setiap hari dilakukan pengambilan contoh Daphnia untuk dianalisis protein, karbohidrat dan ukuran panjang masing-masing 10 ekor, serta energi 50 ekor…dst
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Judul: Pengaruh dosis pupuk kotoran domba priangan (ovis aries) terhadap kandungan gizi daphnia sp.
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh pupuk kotoran domba priangan (Ovis aries) dengan berbagai dosis terhadap kandungan gizi Daphnia sp. Penelitian dilaku- kan di laboratorium "Aquatic Biology" Biotrop, Bogor, selama 2 bulan yaitu dari tanggal 2 Nopember 1986 sampai 7 Janu- ari 1987. Rancangan percobaan yang digunakan adalah rancangan a- cak lengkap (RAL) dengan 4 perlakuan dan 3 ulangan. Perlakuan dalam hal ini adalah pemupukan dengan dosis 1,6; 2,4; 3,2; 4,0 gram kotoran domba per liter. Pupuk yang digunakan adalah kotoran domba priangan (0vis aries) yang sudah kering, yang diperoleh dari Fakultas Peternakan IPB, Bogor. Analisis protein, karbohidrat, lemak dan energi serta perubahan panjang tubuh Daphnia sp. dilakukan tiap hari, sedang kualitas air dilakukan 5 hari sekali (pada awal dan akhir penelitian). Padat penebaran awal 250 ekor per wadah. Daphnia sp. yang digunakan adalah yang berumur satu hari. Wadah yang digunakan untuk penelitian adalah akuarium berbentuk silinder yang berkapasitas 20 liter sebanyak 12 buah. Masing-masing akuarium diisi air yang telah diperkaya dengan kotoran domba sebanyak 16 liter. ...
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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