Judul: Teknik Pemeliharaan dan Perilaku Adaptasi Orangutan Kalimantan (Pongo pygmaeus morio Owen, 1837) di Taman Satwa Cikembulan Garut
Abstrak: Orangutan kalimantan merupakan spesies primata yang mengalami penurunan populasi di alam dan terancam punah. Hal ini memerlukan upaya konservasi eksitu, salah satunya di Taman Satwa Cikembulan. Teknik pemeliharaan dan adaptasi orangutan di habitat eksitu perlu diperhatikan. Tujuan penelitian ini untuk mengkaji teknik pemeliharaan dan menilai respon orangutan kalimantan terhadap perlakuan warna baju di Taman Satwa Cikembulan. Adaptasi orangutan dilakukan dengan memberikan perlakuan pengenaan warna baju yang berbeda (hitam, merah, biru, dan kuning) pada pengamat. Pengumpulan data pemeliharaan orangutan dilakukan dengan observasi lapang, wawancara, dan studi literatur. Orangutan kalimantan memberikan respon terbaik terhadap pengamat berbaju merah. Manajemen kandang belum ideal karena tidak tersedia kandang karantina dan pengayaan kandang masih kurang, manajemen pakan sudah ideal meskipun tidak ada penimbangan pakan, dan manajemen kesehatan belum ideal karena belum tersedia klinik bagi satwa sakit.
Keyword: adaptasi, manajemen pemeliharaan, orangutan

Judul: Captive Breeding Management and Animal Welfare Level of Orangutan Kalimantan (Pongo pygmaeus) in Taman Safari Indonesia Bogor
Abstrak: Populasi orangutan kalimantan di alam semakin terancam sehingga upaya konservasi secara eksitu perlu dilakukan. Taman Safari Indonesia Bogor merupakan salah satu lembaga konservasi yang melestarikan orangutan kalimantan di luar habitat aslinya. Penelitian ini bertujuan untuk mengidentifikasi teknik pemeliharaan, mengidentifikasi pemanfaatan satwa bagi oleh pengelola, serta mengukur tingkat kesejahteraan orangutan kalimantan di TSI bogor. Metode yang digunakan yaitu observasi lapang melalui pengamatan dan pengukuran, wawancara, dan studi pustaka. Hasil penelitian menunjukan bahwa teknik pemeliharaan yang dilakukan sudah baik namun perlu dilakukan peningkatan. Pemanfaatan yang diberikan oleh pengelola dalam mengelola orangutan kalimantan adalah dengan memberkan edukasi bagi pengunjung. Tingkat kesejahteraan orangutan kalimantan tergolong sangat baik berdasarkan penilaian five domain satwa menurut South East Asian Zoos and Aquarium Association (SEAZA)., Bornean orangutan populations in the wild are increasingly threatened, so ex situ conservation efforts need to be carried out. Taman Safari Indonesia Bogor is one of the conservation institutions that conserve Bornean orangutans outside their natural habitat. This study aims to identify captive breeding, animal utilization for visitors, and measure the welfare level of Bornean orangutans at TSI Bogor. The method used was field observation through observation and measurement, interviews, and literature study. he results showed that the maintenance techniques carried out were good but needed to be improved. Utilization provided by the manager in managing Bornean orangutans is by providing education for visitors. The welfare level of Bornean orangutans is classified as very good based on the assessment of five animal domains according to the South East Asian Zoos and Aquarium Association (SEAZA).
Keyword: orangutan, orangutan kalimantan, pongo pygmaeus, tingkat kesejahteraan, teknik pemeliharaan, taman safari, taman safari indonesia, kesejahteraan satwa

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