Judul: Pengaruh dosis pupuk NPK dan jarak tanam terhadap pertumbuhan dan produksi kacang koro pedang (Canavalia ensiformis)
Abstrak: Penelitian ini bertujuan untuk memperoleh kombinasi terbaik antara dosis pupuk NPK dengan jarak tanam dalam menghasilkan produksi terbaik pada tanaman kacang koro pedang (Canavalia ensiformis). Penelitian dilaksanakan di Kebun Percobaan Sawah Baru, Institut Pertanian Bogor, Darmaga, Bogor dengan ketinggian tempat 209 meter di atas permukaan laut pada bulan November 2015-April 2016. Rancangan perlakuan yang digunakan adalah faktorial dua faktor dalam rancangan lingkungan kelompok lengkap teracak dengan tiga ulangan. Faktor pertama adalah dosis pupuk yang terdiri atas tiga taraf yaitu perlakuan P0 (tanpa pemupukan), P1 (Urea 25 kg ha-1; SP-36 50 kg ha-1; KCl 37,5 kg ha-1) dan P2 (Urea 62,5 kg ha-1; SP-36 112,5 kg ha-1; KCl 87,5 kg ha-1), dan faktor kedua adalah jarak tanam yang terdiri dari tiga taraf yaitu J1 ( 50 cm x 50 cm x 70 cm), J2 (50 x 50 cm x 100 cm) dan J3 (70 cm x 70 cm x 100 cm). Hasil penelitian menunjukan bahwa perlakuan dosis pupuk NPK dan jarak tanam tidak memberikan pengaruh yang nyata terhadap pertumbuhan vegetatif dan produksi kacang koro pedang.
Keyword: fertilizer, plant density, yield

Judul: Pengaruh Dosis Pupuk NPK dan Aplikasi Rhizobium terhadap Produktivitas dan Mutu Benih Koro Pedang (Canavalia ensiformis)
Abstrak: Penelitian ini bertujuan memperoleh kombinasi terbaik antara dosis pupuk NPK dengan jenis rhizobium dalam menghasilkan pertumbuhan, produktivitas dan mutu benih terbaik pada tanaman koro pedang (Canavalia ensiformis). Penelitian dilaksanakan di lahan milik Pesantren Al-Barokah, Ciherang Tengah, Dramaga, Bogor, dengan ketinggian tempat 240 meter di atas permukaan laut pada bulan Juli-Desember 2013. Rancangan perlakuan yang digunakan adalah faktorial dua faktor dalam rancangan lingkungan kelompok lengkap teracak dengan tiga ulangan. Faktor pertama adalah dosis pupuk (Urea, SP-36 dan KCl) yang terdiri atas 4 taraf (P0= kontrol ; P1= N 11.5 kg/ha, P2O5 18 kg/ha, K2O 22,5 kg/ha; P2= N 23 kg/ha, P2O5 36 kg/ha, K2O 45 kg/ha; P3= N 34.5 kg/ha, P2O5 54 kg/ha, K2O 67,5 kg/ha) dan faktor kedua adalah jenis rhizobium yang terdiri atas 3 taraf (R0= Kontrol, R1= Nodulin dan R2= Rhizo-plus). Hasil penelitian menunjukkan perlakuan P1 dianggap telah cukup untuk digunakan dalam kegiatan budidaya tanaman koro pedang. Aplikasi rhizobium dan interaksinya dengan dosis pupuk secara umum tidak memberikan pengaruh terhadap pertumbuhan tanaman, tetapi meningkatkan mutu benih yang dihasilkan. Kedua jenis rhizobium memberikan hasil yang tidak berbeda nyata terhadap mutu fisik dan fisiologis benih yang dihasilkan.
Keyword: kombinasi, nodulin, rhizo-plus, mutu benih

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