Judul: Densitas Gizi Konsumsi Pangan Remaja di Kota Bandung dan Yogyakarta.
Abstrak: Tujuan penelitian adalah menganalisis densitas gizi remaja di Bandung dan Yogyakarta dan hubungannya dengan indeks massa tubuh (IMT) dan status anemia. Desain penelitian merupakan desain cross sectional melibatkan 184 contoh (14-17 tahun). Penelitian menggunakan data sekunder dari penelitian Pengembangan Model Pendidikan Gizi Berbasis Web untuk Perbaikan Perilaku Makan Remaja (Dwiriani et al. 2013) dengan menggunakan data karakteristik contoh dan sosial ekonomi, antropometri, kadar hemoglobin, dan data recall 1x24 jam. Hasil penelitian menunjukan densitas energi konsumsi contoh Bandung 2.0 ± 0.4 kkal/g dan contoh Yogyakarta 1.9 ± 0.35 kkal/g dengan densitas asupan protein tergolong cukup, densitas asupan 4 zat gizi mikro kurang kecuali densitas zat besi pada contoh Yogyakarta. Terdapat hubungan positif (p<0.05) antara densitas asupan zat gizi dengan usia, jenis kelamin, pendidikan ibu, pekerjaan ayah, IMT, dan status anemia dan hubungan negatif (p<0.05) antara densitas asupan zat gizi dengan besar keluarga. Pangan dengan kualitas terbaik berdasarkan densitas energi pangan dan indeks Nutrient Rich Food (NRF) 9.3 adalah buah-buahan, sayuran daun, telur, dan pangan nabati. Jajanan merupakan pangan yang tinggi keragamannya namun rendah zat gizi.
Keyword: densitas energi, densitas zat gizi, Nutrient Rich Food Index, remaja

Judul: Healthy Eating Index Remaja di Kota Yogyakarta dan Padang
Abstrak: Remaja rentan terhadap masalah kekurangan maupun kelebihan gizi. Salah satu faktor penyebab masalah tersebut adalah kualitas konsumsi pangan yang dapat diukur dengan healthy eating index (HEI) dan mean adequacy ratio (MAR). Tujuan penelitian ini adalah mempelajari hubungan karakteristik sosial ekonomi keluarga dengan kualitas konsumsi pangan remaja di Yogyakarta dan Padang. Data konsumsi diperoleh dari recall 1x24 jam. Skor MAR termasuk kategori kurang (61.8 %), sedang (21.1 %), dan baik (17.1 %). Skor HEI konsumsi contoh termasuk kategori buruk (77.9 %). Hasil uji hubungan menunjukkan bahwa terdapat hubungan signifikan positif antara pendidikan ayah dan ibu dengan skor HEI dan MAR (p<0.05), hubungan signifikan positif antara pendidikan ayah dan ibu (p<0.05), dan hubungan signifikan antara sumber karbohidrat dengan status gizi IMT/U (p<0.05).
Keyword: healthy eating index, kualitas konsumsi, mean adequacy ratio

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