Judul: Strategi Pengembangan Pariwisata di Obyek Wisata Danau Toba, Kecamatan Girsang Sipanganbolon, Kabupaten Simalungun, Provinsi Sumatera Utara
Abstrak: Obyek wisata Danau Toba merupakan salah satu obyek wisata tirta di Kabupaten Simalungun yang cukup potensial, karena memiliki pemandangan yang indah dengan bentangan air danau yang luas dan bersih. Keberadaan Pulau Sarnosir di tengah Danau Toba menjadi daya tarik tersendiri. Tujuan penelitian ini adalah (l).mengetahui kondisi industri kepariwisataan di obyek wisata Danau Toba. (2) mengetahui faktor-faktor pendukuhg pengembangan obyek wisata Danau Toba. (3) menduga kebutuhan investasi di Danau Toba. (4) menyusun strategi pengembangan pariwisata agar dapat meningkatkan pendapatan masyarakat dan pemerintah daerah di sekitar obyek wisata Danau Toba. Metode penelitian yang digunakan adalah studi kasus dengan analisis data menggunakan analisis deskriptif, analisis persepsi dan preferensi, analisis produktifitas, analisis biaya perjalanan dan analisis SWOT.
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Judul: Kesempatan bekerja dan berusaha di sektor informal pada daeraah obyek wisata: Kasus di obyek Wisata Danau Toba Parapat, Kabupaten Simalungun, Sumatera Utara
Abstrak: Secara garis besar tujuan penulisan skripsi ini adalah menelaah peluang bekerja dan berusaha di sektor informal sebagai dampak dari pengembangan kawasan wisata Danau Toba, Parapat, melihat kendala-kendala dalam penciptaan kesempatan kerja di sektor informal pariwisata serta penelaahan dampak dari pengembangan kepariwisataan di Parapat terhadap pendapatan masyarakat yang terkait di dalamnya. Untuk mencapai tujuan tersebut, maka dilakukan pendataan jenis-jenis usaha yang ada di lokasi wisata serta mengumpulkan informasi tentang berbagai hal yang menyangkut tujuan-tujuan tadi seperti pendapatan, modal usaha/modal kerja serta aset-aset yang dimiliki. Data-data yang digunakan dalam penelitian ini adalah data primer dan data sekunder. Data primer diperoleh dari wawancara bebas dan pengisian kuesioner dengan responden yaitu pekerja sektor informal, pengamatan di lapangan serta dari beberapa informan dari pihak pemerintah daerah setempat, wisatawan dan pekerja formal, sedangkan data sekunder diperoleh dari data potensi desa dan Dinas Pariwisata Kabupaten Simalungun. Dalam rangka pengembangan kepariwisataan di kota Parapat sangat dibutuhkan kerjasama yang erat antara pemerintah melalui instansi yang terkait dengan masyarakat baik perorangan maupun perusahaan mengingat kondisi kepariwisataan di Parapat belum sepenuhnya dimanfaatkan baik potensi maupun sumberdaya yang dimilikinya. Hal ini sangat penting guna mendukung program pembangunan kepariwisataan Beyond Parapat.
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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