Judul: Kajian kelayakan tekno-ekonomi produk cabe merah keriting segar dan olahan
Abstrak: Cabe merah adalah salah satu komoditas penting di Indinesia yang tidak dapat dipisahkan dari kebutuhan sehari-hari rumah tangga, disamping sebagai bahan baku industri pangan dan farmasi. Hal ini menunjukkan bahwa potensi pasar cabe merah cukup terbuka, baik untuk memenuhi kebutuhan dalam negeri maupun ekspor, tetapi dalam pengelolaan usaha taninya belum dilakukan secara komersial, sehingga produktivitas serta kualitas hasil usaha masih rendah. Sementara itu, penanganan produk cabe merah, baik dalam bentuk segar maupun olahan yang dilakukan oleh petani dan pengumpul belum dilakukan secara baik, sehingga produk yang dihasilkan tidak dapat diserap oleh industri pangan dan farmasi sebagai bahan baku industrinya.
Keyword: Peppers, Cabe merah, tekno-ekonomi

Judul: Uji Percontohan (Pilot Testing) Pengering Cabe Merah (Capsicum annuum L.) Tipe Konveksi Bebas untuk Pengusaha Tingkat Pedesaan
Abstrak: Bagi masyarakat Indonesia cabe merah komoditas pertanian yang merakvat, dibutuhkan oleh hampir semua orang dari berbagai kalangan. Produksi cabe nierah di Indonesia pada tahun 1988 adalah 448 722 ton, dari jumlah diekspor sehanyak 39 373 ton sedangkari pada tahun 1989 produksi sebesar 489 503 ton dan junilah yang diekspor sebanyak 11 157 ton. Cabe rnerah pada saat dipanen memiliki kadar a i r 80 % - 90 % basis basah dan sebagaimana konioditas pertanian pada uniumnya cahe merah memiliki sifat mudah rusak dan busuk.
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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