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: Interpretation Planning on Birdwatching Program in the Center for Plant Conservation Bogor Botanic Garden, West Java.
Abstrak: Center for Plant Conservation Bogor Botanic Garden of the Indonesian Institute of Sciences (PKT KRB – LIPI) is a favourite destination in Bogor. Most of visitors come to enjoy its beautiful scenery and landscape, but only few of them interest in animals (Ibrahim 2006). In fact, PKT KRB is also a place to stay for some birds, including migrating birds stopover (Sukmantoro 2007). Prior researches has discovered 43 – 62 kinds of bird in PKT KRB since 1932 up to 2013 (Diamond et. al. 1987; Van Balen 1999; Levelink et. al. 1997; Tirtaningtyas 2004). In order to increase visitor interests of birds in PKT KRB a proper interpretation program shall be made to conect a bridge between people and birds that live in PKT KRB. A good interpretation program came from a well-defined plan which made through dynamic and systematic data inventarization, analysis, synthesis and interpretation plan (Sharpe 1982). The research of interpretation planning for birdwatching in PKT KRB was conducted from May 2013 and June 2013. It was carried in 12 areas in PKT KRB based on plant categories. It also equipped with Binoculars, Global Positioning System (GPS), DSLR camera (Nikon D7000), Sigma 150-500 mm lense, tripod, birds identification books, sets of questionaire, interview guidance, PKT KRB’s field map, and a timer. During the activities, data was collected in three times— morning (around 06.00-08.00), noon (around 11.00-13.00), and afternoon (around 15.00-17.00) in each area for three days. Birdwatching data were collected using Mac Kinnon list (MacKinnon et. al. 2010) which consisted of 5 kinds of bird in a list and ended up to 36 list altogether. Despite of birds identification and distribution in PKT KRB through birdwatching activity, the research also conducted to find out visitor, bird experts, and management responses about PKT KRB birdwatching program through interviews. Interview activities were held to 100 respondents from elementary, junior high, and senior high school students, college students, and other visitors. Interview also held to 15 respondets from bird lovers, 2 respondents from bird experts, and 2 respondents from PKT KRB’s management. The research was able to identify 48 kinds of bird which belong to 23 birds family. However, based on interviews, conservation status, endemicities, and bird existances over the years, the numbers of potential bird to be the object of birdwatching program in PKT KRB had been narrowed down to only 25 kinds of bird. In order to increase visitor interest on birdwatching in PKT KRB, the research has come up with 3 different interpretation tracks which suited to areas where most of birds acquitance are high. On the first track, “Water Birds Track”, visitor could see black-crowned night-heron as its main object. Secondly, on the “Rare Birds Track” some rare birds, such as blue-eared kingfisher, collared kingfisher, plain-throated sunbird, and red-breasted parakeet are easily to find in a high rate of acquitence. Thirdly, on the “Endemic Birds Track”, some endemic birds, such as grey-cheeked green-pigeon, scarlet-headed flowerpecker dan olivebacked tailor bird are in a high rate of acquintance. The main topic of this research is “Touting birds diversity in PKT KRB”.
Keyword: Interpretation planning, bird diversity, birdwatching

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