Judul: Studi Permintaan Rekreasi dan Strategi Pengembangan Ekowisata Spiritual di Taman Nasional Ujung Kulon
Abstrak: Spiritual tourism is a growing tourism phenomenon at Ujung Kulon National Park. Identification of demand and its potential impacts become important to define eco-spiritual tourism development strategy for the ecologically high-sensitive national park. Study on pilgrimage site visitors within the park shows that they were motivated to know history, know ancestors, and seek help for career and business excellence; and also have minimum concern on tourism facilities and services. While, study on local people and park manager shows that spiritual tourism activities are tought to have moderate impact on economical and socio-cultural aspect of local people, as well as its relation on park management policy. The concept of eco-geo-spiritual-tourism is proposed from the study to maintain optimum balanced point between visitor needs, benefit for local society and the park sustainability.
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Judul: Studi pola matapencaharian masyarakat di sekitar Taman Nasional Ujungkulon dan pengaruhnya terhadap pengembangan ekoturisme
Abstrak: Hak Pariwisata menjadi tumpuan masa depan sebagai penghasıl devisa utama selain minyak dan gas, tekstil, kayu lapis serta produk kayu olahan. Sejalan dengan adanya pergeseran industri pariwisata yang cenderung berorientasi pada lingkungan alam, maka pemerintah turut mendorong upaya pengembangan industri kepariwisataan yang tidak hanya bertumpu pada kegiatan wisata tradisional/budaya, namun lebih luas lagi terhadap upaya pengelolaan dan kegiatan wisata alam (ekoturisme) Taman Nasional Ujungkulon merupakan salah satu kawasan konservasi yang potensial untuk dikembangkan sebagai obyek ekoturisme dan telah ditetapkan sebagai Situs Warisan Alam Dunia (World Heritage Site). Untuk itu dalam pengembangannya diperlukan pengkajian mengenai pola hidup masyarakat di mana dalam pengembangan ekoturisme harus memperhatikan perluasan kesempatan kerja dan peluang berusaha bagi masyarakat sekitar sehingga mampu meningkatkan nilai ekonomis Taman Nasional Ujungkulon. Penelitian ini bertujuan untuk mengetahui pola matapencaharian masyarakat sekitar Taman Nasional Ujungkulon dan pengaruhnya terhadap pengembangan ekoturisme serta mengidentifikası adanya peluang untuk pengembangan partisipasi masyarakat dalam kegiatan ekoturisme yang berdasar kepada pola matapencaharian masyarakat.
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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