Judul: Tanggap pertumbuhan dan hasil jagung manis (Zea mays saccharata Sturt) terhadap pemupukan nitrogen dan fosfor di Mapanget, Sulawesi Utara
Abstrak: Percobaan ini bertujuan untuk mengetahui tanggap pertumbuhan dan hasil jagung manis terhadap pemupukan nitrogen dan fosfor. Percobaan dilaksanakan di desa Lapangan, Kecamatan Mapanget, Kotamadya Manado, dari 10 Nopember 1994 sampai 15 Januari 1995. Percobaan ini menggunakan Rancangan Petak Terpisah dengan 12 perlakuan dan 3 ulangan. Petak utamanya adalah 3 takaran nitrogen yang terdiri dari 150, 250 dan 350 Kg N/ha. Anak petak adalah 4 takaran fosfor yang terdiri dari 75,150, 225 dan 300 kg P2O5 /ha. Terdapat 36 saluran percobaan dengan ukuran 4 m x 6 m, petak panen berukuran 2,4 m x 5 m. Lahan yang digunakan memiliki kemiringan (lereng) 0-2 %, tekstur lempung, pH tanah 6,9, tidak pernah tergenang, tidak ada erosi, dan kedalaman efektif tanah > 90 cm. Diberikan pupuk KCL sebanyak 100 Kg K₂O/ha sebagai pupuk dasar. Nitrogen dan fosfor berinteraksi nyata dalam menghasilkan jumlah tongkol panen dan yang dapat dipasarkan, bobot tongkol panen dan yang dapat dipasarkan, tinggi tanaman serta tinggi tongkol utama. Pemberian nitrogen sampai 350 kg N/ha dan fosfor sampai 300 kg P2O5 /ha meningkatkan jumlah tongkol yang dapat dipasarkan, bobot tongkol panen dan yang dapat yang dipasarkan yaitu masing-masing 23324 buah/ha, 12719,91 kg/ha dan 6938,89 kg/ha. Pada nitrogen dan fosfor rendah yaitu 150 kg N/ha dan 75 kg P2O5 /ha didapatkan banyak tongkol yang tidak dapat dipasarkan karena memiliki panjang < 16 cm. Peningkatan nitrogen akan berarti bila diikuti dengan peningkatan fosfor, namun dalam percobaan ini 250 kg N/ha dan 150 kg P2O5 /ha sudah cukup. .. dst
Keyword: Sweet corn, Fertilizer, Fosfor, Pemupukan

Judul: Response of Fertilizing B and NPK to the growth of sweet  corn plants (Zea mays L. Saccharata) on Dramaga Inceptisols
Abstrak: Jagung manis (Zea mays L. Saccharata) adalah salah satu tanaman pangan dan bahan baku industri di Indonesia dan dunia. Peningkatan produktivitas jagung manis dapat dilakukan melalui optimasi pemupukan nitrogen (N), fosfor (P), kalium (K) dan boron (B) merupakan hara makro dan mikro esensial yang dibutuhkan tanaman jagung untuk dapat tumbuh dan berkembang serta berproduksi secara optimal. Penelitian ini bertujuan untuk mengetahui kandungan B dan NPK dalam tanah dan tanaman serta pertumbuhan dan perkembangan jagung manis sebagai respon dari kombinasi pemberian pupuk mikro B dan NPK pada Inceptisol Dramaga. Penelitian menggunakan Rancangan Acak Kelompok (RAK) dengan delapan perlakuan (B0S0, B0S1, B1S1, B2S1, B3S1, B1S2, B2S2, B3S2) yang terdiri dari empat taraf B (0, 9, 18, 27 kg/ha) dan tiga taraf NPK (0%, 75% dan 100% std). Perlakuan diulang kedalam empat kelompok menghasilkan 32 petak percobaan. Kombinasi pemberian pupuk B dan NPK signifikan meningkatkan B tersedia dalam tanah. Selain itu, pemberian pupuk B dan NPK meningkatka panjang daun, dan kadar B dalam tanaman serta mempercepat umur berbunga betina (silking). Pemberian 9-18 kg/ha B dan 75% NPK memiliki pengaruh positif yang relatif konsisten pada semua parameter agronomis yang diteliti. Perlu adanya penelitian lanjutan untuk melihat pengaruh pemberian pupuk B dan NPK terhadap produksi jagung manis pada tanah dengan kesuburan yang berbeda-beda, serta kombinasi waktu dan cara pemupukan B., Sweet corn (Zea mays L. Saccharata) is one of the staple crops and raw materials for the industry in Indonesia and globally. Increasing the productivity of sweet corn can be achieved through the optimization of nitrogen (N), phosphorus (P), potassium (K), and boron (B) fertilization, which are essential macro and micronutrients required for the optimal growth, development, and production of corn plants. This research aims to determine the content of B and NPK in soil and plants, as well as the growth and development of sweet corn in response to the combination of B and NPK micro-fertilizer application in Inceptisol Dramaga. The study utilized a Randomized Complete Block Design (RCBD) with eight treatments (B0S0, B0S1, B1S1, B2S1, B3S1, B1S2, B2S2, B3S2) consisting of four levels of B (0, 9, 18, 27 kg/ha) and three levels of NPK (0%, 75%, and 100% standard). The treatments were replicated into four blocks, resulting in 32 experimental plots. The combination of B and NPK fertilizer application significantly increased the available B in the soil. Additionally, B and NPK fertilization enhanced leaf length, and B content in the plants, as well as accelerate the female flowering age (silking). The application of 9-18 kg/ha B and 75% NPK showed a relatively consistent positive influence on all agronomic parameters studied. Further research is needed to examine the impact of B and NPK fertilizer application on sweet corn production in soils with varying fertility and explore the timing and methods of B fertilization
Keyword: Availability, boron, NPK, soil parameters, sweet corn

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