Judul: Studi Interaksi Monyet Ekor Panjang (Macaca fascicularis) terhadap Pengunjung di Taman Wisata/Cagar Alam Pananjung Pangandaran
Abstrak: Taman wisata/Cagar Alam Pananjung Pangandaran memiliki daya tarik histori, keindahan alam dan keanekaragaman hayati, khususnya satwa liar monyet ekor panjang (Macaca fascicularis). Potensi ini cukup merangsang pengunjung yang datang ke lokasi ini.
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Judul: Pengaruh aktivitas manusia terhadap ekologi monyet ekor panjang (Macaca fascicularis) di Cagar Alam Pangandaranm, Jawa Barat
Abstrak: Mayoritas perubahan perilaku primata dikaitkan dengan ketersediaan, kualitas, dan distribusi makanan pokok. Hal yang sama terjadi pada primata yang terbiasa dengan kehadiran manusia. Penelitian ini bertujuan menguji keragaman kondisi dengan kehadiran manusia terhadap monyet ekor panjang pada bujet aktivitas, komposisi pakan, jarak jelajah harian dan derajat inetraksi agonistik dengan manusia. Secara spesifik, saya membandingkan perilaku monyet ekor panjang diantara tiga tipe hari: hari kerja, akhir pekan dan ramadhan. Monyet ekor panjang menghabisakn banyak waktunya untuk beristirahat (34±4%), berjalan (30±5%) dan perilaku sosial (24±3%), dan tidak ada aktivitas selain berjalan yang berbeda diantara tipe hari. Ketika jumlah pengunjung meningkat, pesentase makan meningkat dan presentase memainkan sampah manusia menurun. Komposisi pakan monyet ekor panjang stabil diantara tiga tipe hari (Pakan utama: makanan manusia: 17%, daun 34%, dan buah dan biji 33%). Tetapi prsentase bunga menurun ketika jumlah pengunjung meningkat. Jarak jelajah (578±336m) menunjukan tidak ada perbedaan signifikan diantara tipe hari dan tidak berhubungan dengan jumlah pengunjung. Umumnya interaksi yang terjadi dengan manusia adalah toleran, tetapi terkadang juga terjadi interaksi agresif. Frekuensi pemberian pakan lebih tinggi pada akhir pekan, sementara frekuensi interaksi lainnya stabil diantara tipe hari. Dan, derajat level 1 dan level 2 meningkat ketika jumlah pengunjung meningkat. Keragaman kondisi ekologi makan monyet berhubungan dengan jumlah wisatawan. Jumlah pengunjung dan kelimpahan makanan manusia mempengaruhi beberapa aspek ekologi monyet ekor panjang. Monyet ekor panjang dapat memperbaiki strategi pakan untuk menghadapi ketersediaan pakan manusia. Ketergantungan dengan makanan manusia dapat menyebabkan 1) kelebihan populasi dapat meningkatkan kompetisi inter/intra kelompok, 2) obesitas, dan 3) gigi busuk. Selain itu, interaksi memberi pakan dapat meningkatkan konflik monyet-manusia dan potensi transmisi patogen. Untuk mengelola pariwisata kedepan, pelarangan pemberian makanan dari pemerintah daerah diperlukan.
Keyword: bujet aktivitas, kera ekor panjang, Macaca fascicularis, interaksi wisatawan-monyet

Judul: Algorithm Construction of HLI Hash Function
Abstrak: Cryptography is a study of mathematical techniques related to aspects of information security regarding on confidentiality, data integrity, entity authentication, and data origin authentication. Data integrity is a service, which is associated with the conversion of data carried out by unauthorized parties. To maintain data integrity, one can use hash functions. An hash function is a computationally efficient function to map an arbitrary length bitstring to a fixed length bitstring called as hash value. The use of hash function in maintaining the information integrity and authentication is in digital signatures, virus protection, and software distribution. Illustration of the hash function in the integrity and authentication of information that is emailed as follow. The sender sends the information and hash value to the recipient. If the hash value of the information is equal to the hash value that is sent by the sender, then information has not been changed. Otherwise the information has been changed. An hash function has two properties, one way and collision resistance. An hash function is called one way if it is computationally infeasible to find any input such that when given any hash value . Meanwhile an hash function is called collision resistant if it is computationally infeasible to find any two inputs where such that . The purpose of this study is to construct a HLI hash function algorithm, to analyze the speed and security of the hash functions as a results of construction. Furthermore, it is to compare it with SWIFFT. Hash function is constructed based on the result of algebraic operations on modular polynomial ringwith . Modular polynomial ring noted as is a set of all polynomials of degree at most with coefficients in . can be represented as a set of integer vector of modulo in dimension . So, it is simple to implement in a computer. In vector operations, is lattice . Furthermore, alattice that is defined from certain polynomial ring is called ideal lattice. HLI hash function is consists of addition and multiplication algorithm in the ring. Addition algorithm consists of sumation operations of modulo and multiplication consists of multiplication operations of modulo . Generally, algorithm of HLI hash function consists of multiplication operations of modulo and addition operations of modulo . However, if the input is binary number then multiplication algorithm only consists of multiplication operation of modulo , so algorithm of HLI hash function consists of multiplication operations of modulo and addtion operations of modulo . An hash function is secured if it has two properties, i.e., one way and collision resistance. HLI hash function hash is one way, it is following the proof of Micciancio. It is has collision resistant because of polynomial is irreducible over and monic. Moreover, it is proved that for every unit vector , the vector is small vector. If the input of hash function is a binary number then HLI hash function only involves addition operations of modulo . So the time that used almost same with SWIFFT. The excellence of HLI hash function is the key size smaller than SWIFFT. This effect on
Keyword: hash function, modular polynomial ring, lattice