Judul: Studi pasar burung di sekitar taman nasional Gunung Gede Pangrango
Abstrak: Pasar burung merupakan tempat dikumpulkannya burung-burung untuk diperdagangkan. Terdapat kemungkinan jenis-jenis yang diperdagangkan di pasar burung berasal dari kawasan konservasi. Kemungkinan ini akan sangat besar apabila lokasi pasar burung berdekatan dengan suatu kawasan konservasi salah satu contoh adalah Taman Nasional Gunung Gede Pangrango (TNGP).
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Judul: Performance Bird Market in Bogor West Java
Abstrak: Keragaan pasar burung merupakan pencapaian usaha dalam menjalankan aktivitas perdagangan burung, sehingga penelitian ini digunakan untuk melihat seberapa ekonomisnya usaha perdagangan burung yang dilakukan. Penelitian dilakukan dengan mewawancarai pedagang dan pembeli burung menggunakan metode purposive dan accidental sampling. Pasar burung di Bogor menjual bermacam jenis burung, sangkar, pakan, aksesoris, alat perawatan, obat dan vitamin. Sebagian besar pedagang burung berlatar usaha karena hobi, lama usaha kurang dari 5 tahun, dan sebagai pedagang profesional. Pembeli burung rata-rata orang dewasa dan menyukai jenis burung tertentu untuk peliharaan rumah. Asal burung sebagian besar dari Pulau Jawa. Saluran pemasaran yaitu penangkap-penjual-pembeli, penangkar-penjual-pembeli, dan penangkap-agen-penjual-pembeli. Nilai ekonomi pasar burung sebanyak Rp453.394.000/bulan dengan keuntungan Rp114.935.000/bulan. Keragaan pasar burung di Bogor dilihat dari hasil perhitungan eff-X dan PCM menunjukkan hasil yang beragam. Hasil perhitungan efisiensi internal dan PCM merupakan indikator pedagang dalam meningkatkan margin pemasaran., The performance bird market is a business achievement in bird trading activities, so the research is used to see how economical the bird trading business is. The research was conducted by interviewing traders and buyers of bird using purposive and accidental sampling method. The bird market in Bogor sells various type of birds, cages, feeds, accessories, grooming tools, medicines, and vitamins. Most of the bird traders have a business background due to hobbies, business length less than 5 years, and as professional traders. The average of bird buyers are adults and they prefer to buy several species as a pet. The origin of bird is mostly from Java. The market channels are catcher-seller-buyer, captive-seller-buyer, and catcher-agent-seller-buyer. The economic value of the bird market is IDR 453.394.000/month with a profit of IDR 114.935.000/month. The performance bird market in Bogor which is counted from the calculation of the Eff-X (Internal Efficiency) and PCM (Price Cost Margin) shows mixed results. The result of the calculation of Eff-X and PCM are indicators of traders in increase marketing margin.
Keyword: bogor, keragaan, pasar burung, perdagangan burung, bogor, bird market, bird trade, performance

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