Judul: Pengelolaan kesejahteraan burung paruh bengkok (Psittacidae) sebagai obyek daya tarik wisata di Kebun Binatang Gembira Loka Yogyakarta
Abstrak: Gembira Loka Zoo as they running their activity as a conservation institution needs to watch the animal welfare management, and also visitor perception and preference so the function of parrot (bird with curved bill) as tourism destination can be done optimally. Data collected on August 2014 in Gembira Loka Zoo Yogyakarta. The research showed that the achievement of parrot welfare in KBGL categorized as medium. There were 7 cage blocks in parrot welfare scoring. Lory cage has the highest score as big as 87 which categorized as good. Welfare component which need more attention is the one with low score which is the aspect of behaving naturally that affected by cage management andthe functions of cage. Visitor perception towards the welfare management condition was mostly good. Based on visitor preferences, the development of media interpretation needs to be made for parrot. The development that canbe madesuch as interpretation board reparation, coaching and training of Interpreter, and procurement of interpretation video.
Keyword: Bogor Agricultural University (IPB), parrot, media of interpretation, Gembira Loka zoo, animal welfare

Judul: Teknik Pemeliharaan dan Perilaku Harian Nuri Bayan (Eclectus roratus) di MBOF dan ASTI, Bogor
Abstrak: MBOF (Mega Bird and Orchid Farm) and ASTI (Animal Sanctuary Trust Indonesia) are two of the facilities that support eks-situ conservation programs in Indonesia. MBOF has commercial purpose in captive breeding of animals whilst ASTI deals with the maintaining of captive animals for release. The purpose of this research were to compare the maintenance techniques applied by MBOF and ASTI and to describe the Eclectus Parrots daily behaviour. This research was done from May until July 2014. Data were collected through interviews and observation. Behavioral observation was carried out on a pair of Eclectus Parrots using focal animal sampling and one zero sampling methods. The result showed that there were differences in maintenance technique in MBOF and ASTI, i.e. caging techniques, food type variation, feeding preparation method, and handling of sick animals. Those differences were due to different management objectives. The behaviours that had been identified were ingestive behaviour, resting, locomotion, body treatment and sexual behaviour. Most of the daily activities of Eclectus Parrot at both locations consisted of resting (frequency and duration of more than 40%).
Keyword: Bogor Agricultural University (IPB), maintenance technique., Eclectus Parrots, daily behaviour

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