Judul: Keseimbangan energi dan ketahanan fisik siswa Pusdiksi Kodiklat TNI AD pada saat puasa
Abstrak: Secara umum, penelitian ini bertujuan untuk mempelajari keseimbangan energi dan ketahanan fisik siswa Pusdikzi Kodiklat TNI AD pada saat puasa. Adapun tujuan khusus dari penelitian ini adalah : 1)Mempelajari karakteristik contoh (umur, pendidikan terakhir dan kepangkatan, pendapatan dan pengeluaran pangan, serta TB, BB dan status gizi), 2)Mempelajari kebiasaan makan contoh (frekuensi, waktu makan dan jumlah makanan yang dikonsumsi termasuk makanan pantangan), 3)Mempelajari kebiasaan aktivitas contoh yang meliputi kebiasaan tidur, aktivitas pendidikan dan luar pendidikan, 4)Mengkaji persepsi contoh terhadap keadaan tubuh saat puasa, 5)Mempelajari konsumsi dan keseimbangan energi contoh, 6)Mempelajari ketahanan fisik contoh.
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Judul: Hubungan Tingkat Kesukaan dan Asupan Energi dan Protein terhadap Daya Tahan Fisik Siswa Pusat Pendidikan TNI
Abstrak: This study was aimed to analyze the correlation between food preferences and energy protein intake with physical endurance in Indonesian Military Student Center. Cross sectional design was applied in this study at Pusdikzi and Pusdikintel Strat Kodiklat TNI. Total subject were 107 students. The result showed that food preferences between two kinds student had no difference. The recommended daily allowances, intake also level adequacy of energy and protein on Pusdikzi was higher with Pusdikintel Strat significanly (p<0.05). The physical endurance of two kinds showed Pusdikzi was higher significanly between Pusdikintel Strat. Spearman test correlation result showed there was an association between age (p<0.051, r=0.245) and nutritional status (p>0.05, r=0.017) with food preferences. There no association between food preferences with energy (p>0.05, r=0.021) and protein level intake (p>0.05, r=-0.048). There was an association between energy (p<0.05, r=0.395) and protein adequacy level (p<0.05, r=0.588) with physical endurance.
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Judul: The Construction of Greedy SVP LLL Algorithm
Abstrak: A lattice is a set of all integer linear combination of a set of linearly independent vectors in ℝ𝑛���. The independent vectors are called bases of lattice. Any lattice can be generated from many bases, and these bases have the same cardinality. In the lattice, the most fundamental and renowned problem is the Shortest Vector Problem (SVP). SVP is a tracking problem of the shortest nonzero vector in a lattice with equivalent bases. In two dimensions, SVP problem has resolved exactly by Gauss’ algorithm. When the lattice dimension is higher than two, A.K. Lenstra, H.W. Lenstra and L. Lovasz gave a LLL algorithm to compute approximation of nonzero shortest vector in the lattice. Reduced bases solution obtained from LLL algorithm still be an approximation and has polynomial running time of arbitrary dimension which large enough. In 1994, Schnoor and Euchner modified this LLL algorithm as a new variant which later was named deep insertion LLL algorithm. This algorithm is a modified version of the LLL algorithm to the terms of the exchange step to improve the accuracy of output of LLL reduced bases and applying it to the subset sum problem. The purpose of this research are: (1) Reconstruct the LLL algorithm and deep insertion LLL algorithm using a geometric approach. (2) Construct a greedy SVP LLL algorithm. (3) Implement the three algorithms in a symbolic programming language, and evaluate them experimentally. A bases ℬ=[𝐛���1,𝐛���2,…,𝐛���𝑛���] in ℝ𝑚��� is called reduced LLL with parameter 𝛿��� if satisfies: (a) |𝜇���𝑗���𝑖���|≤12, for every integer 𝑖���,𝑗��� with 1≤𝑖���<𝑗���<𝑛���. (b)𝛿���‖𝜋���𝑗���(𝐛���𝑗���)‖2≤‖𝜋���𝑗���(𝐛���𝑗���+1)‖2, for 𝑗���=1,2,…,𝑛���−1,where 𝛿��� is a reduced parameter of real numbers with 14<𝛿���<1. The first requirement is the reduced basis 𝛿��� must “nearly orthogonal” and in its computation case, this requirement can be reached out by using the Gram-Schmidt’s orthogonalization. While the second requirement is called exchange step, or used to called as Lovasz condition. By using both of these requirements, then they establish the LLL algorithm. Then, Schnoor and Euchner modify the LLL algorithm based on the requirements of the exchange step called the deep insertion LLL algorithm, where the exchange step is based on the comparison of the projected vector in orthogonal complement [𝐛���1,𝐛���2,…,𝐛���𝑘���−1]⊥ after j-th reduction. To construct greedy SVP LLL algorithm, the requirements of the exchange step is based on purely by comparing norm of lattice 𝐛���𝑗��� with norm lattice 𝐛���𝑖��� for 𝑖���=1,2,3…,𝑗���−1. The process of insertion reduced vector after the exchange step also has done greedily. Then, we calculate the number of arithmetic operation in greedy SVP LLL algorithm for further analysis. The result of our exprimentation for three algorithms on the certain matrix size shows that the running time of the three algorithms increases propotional to the size of the matrix. The result also shows that by using 𝛿���=34 for the LLL algorithm and the deep insertion LLL algorithm, and the greedy SVP LLL algorithm which is a new variant made by using no parameter of 𝛿���, outperform of the other of two previous algorithm in terms of speed with the same output.
Keyword: LLL algorithm, LLL deep insertion algorithm, greedy SVP LLL algorithm