Judul: Sikap masyarakat terhadap kehadiran mahasiswa di kawasan sekitar kampus : Kasus Desa Babakan, Kecamatan Dramaga, Kabupaten Bogor
Abstrak: Kajian ini dilatarbelakangi oleh perpindahan Fakultas Pertanian dan Fakultas Kedokteran Hewan dari Baranangsiang dan Taman Kencana ke Dramaga. Pengembangan Kampus ke Dramaga bukan hanya mengakibatkan perpindahan mahasiswa, tetapi juga peningkatan pergerakan staf pengajar, serta berbagai pelaku usaha. Keadaan demikian mengakibatkan peningkatan jumlah penduduk di wilayah sekitar Kampus Dramaga, yang mengakibatkan wilayah sekitar Kampus Dramaga menjadi sangat padat. Dampak dari perpindahan ini juga dirasakan oleh masyarakat yang berada di wilayah sekitar kampus selain oleh mahasiswa itu sendiri. Persoalannya adalah bagaimana sikap masyarakat yang berada di sekitar kampus terhadap kehadiran mahasiswa dan faktor-faktor apa saja yang mempengaruhi sikap masyarakat tersebut. Pertanyaan lain adalah bagaimana sebenarnya harapan masyarakat terhadap keberadaan IPB. Rumusan ini bertujuan untuk: (1) Mengetahui sikap masyarakat yang berada di sekitar kampus terhadap kehadiran mahasiswa. (2) Mengkaji faktor-faktor yang mempengaruhi sikap masyarakat yang berada di sekitar kampus terhadap kehadiran mahasiswa dan (3) Mengetahui harapan masyarakat yang berada di sekitar kampus terhadap keberadaan Institut Pertanian Bogor (IPB).
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Judul: Perubahan Sosial Budaya Masyarakat Desa Lingkar Kampus sebagai Dampak Keberadaan Institut Pertanian Bogor
Abstrak: The objectives of this research is to analyze the waves of social change that occurred in Babakan Village since the presence campus of IPB. The result showed that the impact that caused is impact on community life aspects that is structural aspects and cultural aspects of Babakan village community. The changes on structural aspects are the increase of livelihoods diversity, the patterns of stratification changes, the establishment of new social groups, increasingly fading of social interaction and demographic pattern changes. Besides that, the changes on cultural aspects of community are the elements of rural culture changes, the shift of values and norms that exist in the society and also life style change of the rural community. Public attitudes towards the existence of campus of IPB mostly positive value. Public attitudes towards the presence of IPB’s campus has a negative relationship with society characteristics including age, income level and period of resided in Babakan village. Education level have positive relationship with public attitudes. There is also no significant differences in gender characteristic in the formation of attitudes towards the existence campus of IPB.
Keyword: public attitudes, structural and cultural change, Social change

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