Judul: Studi pengaruh Inokulasi Trichoderma sp dan glomus sp terhadap pertumbuhan semai Paraserianthes falcataria (L) Nielsen pada media serbuk gergaji jati, sertbuk gergaji jeungjing dan ampas daun kayu putih
Abstrak: Penelitian ini bertujuan untuk mencari alternatif pengganti tanah sebagai media tumbuh semai melalui pengaruh penggunaan Trichoderma sp dan Glomus sp terhadap pertumbuhan semai Paraserianthes falcataria (L.) Nielsen pada media serbuk gergaji jati, serbuk gergaji jeungjing dan ampas daun kayu putih. Penelitian menggunakan rancangan Split-split plot dalam pola acak lengkap. Trichoderma sp sebagai main plot terdiri atas 2 taraf, Media semai sebagai sub plot terdiri atas 4 taraf dan Glomus sp sebagai sub-sub plot terdiri atas 2 taraf dengan masing-masing perlakuan menggunakan 3 kali ulangan.
Keyword: serbuk gergaji

Judul: Studi pengaruh Trichoderma sp dan Glomus sp terhadap pertumbuhan semai Acacia mangium Willd pada media serbuk gergaji jati, serasah daun pinus dan limbah daun kayu putih
Abstrak: Penelitian ini bertujuan untuk mengetahui media alternatif pengganti tanah sebagai media tumbuh semai A mangium dengan memanfaatkan kerja mikroorganisme Trichoderma sp dan Glomus sp. Rancangan yang digunakan dalam penelitian ini adalah Split-split Plot dalam pola acak lengkap, dengan Trichoderma sp sebagai main plot, Media sebagai sub plot dan Glomus sp sebagai sub-sub plot. Sedangkan parameter yang digunakan adalah pertambahan tinggi, diameter, biomassa dan rasio pucuk- akar. Dari Penelitian ini diperoleh hasil bahwa penggunaan Trichoderma sp yang diinokulasikan ke dalam media mampu meningkatkan pertambahan tinggi sebesar 75 persen, diameter sebesar 44 persen serta meningkatkan biomassa sampai 332 persen dan rasio pucuk akar sebesar 40 persen. Pemberian Trichoderma sp juga meningkatkan ketersediaan kandungan sur hara pada media senai.
Keyword: A mangium

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