Judul: Kompetensi wartawan yang meliput dan menulis bidang pertanian pada suratkabar Pikiran Rakyat Bandung
Abstrak: Suratkabar merupakan salah satu media massa yang fungsi utamanya menyebarkan berbagai informasi kepada khalayak pembaca. Didalam menjalankan fungsi tersebut, wartawan memegang peranan yang sangat penting, karena hampir seluruh informasi yang ada dalam suratkabar dikerjakan oleh wartawan, mulai dari mengumpulkan berbagai informasi yang ada sampai menulisnya. Oleh karena itu, wartawan hendaknya memahami materi informasi, menguasai teknik jurnalistik, dan mempunyai minat yang besar ter- hadap bidang masalah yang diliput sehingga informasi yang disampaikan dapat bermanfaat dan sesuai dengan kebutuhan khalayak pembaca. Penelitian ini bertujuan: (1) Mengetahui karakteristik wartawan suratkabar Pikiran Rakyat yang meliput dan menulis bidang pertanian, yang terdiri dari umur, pendidikan formal, pendidikan non formal jurnalistik, pen- didikan non formal selain jurnalistik, minat, dan pengalaman kerja di bidang jurnalistik, (2) Mengetahui kompetensi mereka dalam meliput dan menulis bidang pertanian, dan (3) Mengetahui hubungan antara karakteristik wartawan dan kompetensi mereka.
Keyword: surat kabar

Judul: Hubungan beberapa karakteristik pembaca suratkabar "Pikiran Rakyat Edisi Cirebon" di Kotamadya Cirebon dengan minat baca mereka pada artikel-artikel pertanian dan non pertanian
Abstrak: Penelitian ini bertujuan : (1) mengidentifikasi karakteristik pembaca suratkabar "Pikiran Rakyat Edisi Cirebon", (2) mengetahui minat baca pembaca suratkabar "Pikiran Rakyat Edisi Cirebon", (3) mengukur hubungan antara karakteristik pembaca dengan minat baca mereka pada artikel-artikel pertanian dan non pertanian. Responden yang dilibatkan dalam penelitian adalah 70 orang pembaca suratkabar "Pikiran Rakyat Edisi Cirebon" yang ber langganan secara kontinyu. Desain yang digunakan dalam penelitian ini ialah survey deskriptif. Pengumpulan data dilakukan dengan menggunakan kuesioner, dilakukan di wilayah kotamadya Cirebon selama satu bulan mulai tanggal 15 Maret sampai dengan 15 April 1992. Data yang dikumpulkan dianalisis dengan tabulasi silang, distribusi frekuensi, koefisien korelasi Spearman dan korelasi kesepakatan Kendall. Hasil penelitian menunjukkan bahwa sebagian besar pembaca suratkabar "Pikiran Rakyat Edisi Cirebon" ialah laki-laki, berusia muda, berpendidikan SD sampai SLTA dan pekerjaan pokoknya ialah selain pegawai negeri dan swasta, yang pada umumnya mereka bekerja sebagai ibu rumah tangga, wiraswasta dan pelajar.
Keyword: surat kabar

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