Judul: Gambaran elektrokardiogram puyuh (Cortunix cortunix Japonica) pada suhu lingkungan tinggi.
Abstrak: Elektrokardiograf (EKG) merupakan alat yang dapat merekam dan mengobservasi kerja jantung. Penelitian ini bertujuan untuk mengetahui gambaran elektrisitas jantung puyuh (Cortunix cortunix Japonica) pada suhu lingkungan tinggi dengan menggunakan alat Elektrokardiograf (EKG). Penelitian ini menggunakan dua puluh empat ekor puyuh yang dibagi dalam empat grup dengan suhu berbeda (25-26oC, 29-30oC, 32-33oC and 35-36oC). Elektroda EKG dipasang pada sayap kiri, sayap kanan dan otot gastrocnemius kiri dan mulai direkam setelah 5 menit dari pemasangan elektroda. Hasil penelitian ini menunjukkan bahwa semakin tinggi suhu diberikan menyebabkan peningkatan pada nilai denyut jatung dan penurunan pada nilai interval PR, dan pada parameter EKG lain tidak berpengaruh akibat pemberian perlakuan panas. Hal ini dapat diartikan bahwa pengaruh perlakuan suhu tinggi menyebabkan puyuh mengalami peningkatan denyut jantung akibat pemendekan interval PR.
Keyword: elektrokardiograf (EKG), puyuh (Cortunix cortunix Japonica), stres panas

Judul: Kadar Malondialdehida pada Hati Burung Puyuh (Coturnix coturnix Japonica) yang Diberi Perlakuan Cekaman Panas
Abstrak: Pemanasan global adalah salah satu faktor eksternal yang mempengaruhi tingkat stres burung puyuh (Coturnix coturnix Japonica). Salah satu bentuk stres yang terjadi akibat peningkatan suhu secara kronis adalah stress oksidatif akibat peningkatan radikal bebas. Indikator yang dapat digunakan untuk menggambarkan aktivitas radikal bebas adalah dengan mengukur kadar malondialdehida (MDA). Penelitian ini bertujuan untuk mengetahui kadar MDA hati burung puyuh yang diberikan Cekaman panas secara berkepanjangan. Penelitian ini menggunakan 24 ekor burung puyuh yang diberikan perlakuan suhu berbeda dari umur DOQ. Dua puluh empat burung puyuh dibagi menjadi empat grup yaitu A (25 - 26°C), B (28 - 29°C), C (32 - 33°C) dan D (35 - 36°C). Hasil penelitian menunjukkan kadar MDA kelompok A (0.398±0.104), B (0.464±0.271), C (0.522±0.197), D (0.526±0.119). Hasil tersebut menunjukkan bahwa terjadi peningkatan MDA namun tidak menunjukkan perbedaan yang nyata (p>0.05).
Keyword: burung puyuh (Coturnix coturnix Japonica), cekaman panas, malondialdehida

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