Judul: Kajian Sumberdaya Perairan Situ Untuk Pengembangan Ekowisata Di Situ Kedaung, Kecamatan Pamulang, Tangerang Selatan
Abstrak: Situ Kedaung merupakan perairan alami yang terletak di Desa Bambu Apus, Kecamatan Pamulang, Tangerang Selatan. Situ ini memiliki nama lain yaitu Situ Sasak atau Situ Pamulang dengan luas sekitar 8,2 hektar dan sumber air berasal dari mata air, air hujan, dan air sungai. Pemanfaatan Situ Kedaung oleh masyarakat sekitar maupun wisatawan menimbulkan dampak terhadap situ, seperti penurunan kualitas perairan dan sumberdaya perairan, pendangkalan serta penurunan volume situ. Penelitian ini bertujuan untuk mengetahui potensi dan kondisi ekologis Situ Kedaung yang meliputi sumberdaya alam dan manusia yang berada si sekitar kawasan Situ Kedaung, mengidentifikasi lembaga/instansi pengelola yang terkait dalam pengelolaan kawasan, mengidentifikasi kesesuaian dan daya dukung kawasan dan merumuskan alternatif strategi pengelolaan untuk pengembangan ekowisata di Situ Kedaung. Penelitian ini berlangsung sejak bulan Juni sampai September 2009 di Situ Kedaung. Analisis data yang digunakan adalah analisis kualitas air, analisis potensi wisata, kesesuaian wisata, daya dukung kawasan dan SWOT.
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Judul: Kajian Pengelolaan Sumberdaya Alam Danau Situgunung untuk Pengembangan Ekowisata, di Taman Nasional Gunung Gede Pangrango
Abstrak: Danau Situgunung memiliki pesona alam yang dapat menjadi daya tarik wisata. Namun ada beberapa masalah yang timbul akibat dari pemanfaatan danau sebagai daerah wisata dan kurang optimalnya pengelolaan dalam pengembangan wisata perairan. Tujuan penelitian ini adalah mengidentifikasi potensi sumberdaya alam Danau Situgunung; menganalisis kesesuaian wisata dan daya dukung kawasan dalam pemanfaatan wisata perairan untuk pengelolaan dan pengembangan ekowisata; menganalisis pengelolaan wisata Danau Situgunung; dan menyusun strategi pengelolaan yang memperhatikan kelestarian lingkungan dan keberlanjutan pemanfaatan. Ruang lingkup penelitian ini dibatasi pada analisis faktor-faktor strategi internal dan eksternal serta formulasi strategi pengembangan ekowisata di Danau Situgunung. Penelitian ini dilakukan di Danau Situgunung Taman Nasional Gunung Gede Pangrango. Pengambilan data di lapangan dan data sekunder berlangsung dari bulan Januari 2010 hingga Mei 2010. Alat analisis yang digunakan adalah analisis kesesuaian wisata (IKW), analisis daya dukung kawasan (DDK), IFE (Internal Factor Evaluation), EFE (External Factor Evaluation), IE (Internal-External), SWOT (Strength, Weakness, Opportunities, Threats) dan QSPM (Quantitative Strategic Planning Matrix).
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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