Judul: Peranan potensi lingkungan dan fasilitas wisata di dalam menunjang obyek wisata di Kabupaten Karo Sumatera Utara: studi kasus pada obyek wisata Berastagi
Abstrak: Obyek Wisata Berastagi merupakan salah satu obyek wisata di Kabupaten Kare, yang memiliki potensi alam dan budaya Karo yang berhubungan dengan kegiatan pariwisata. Sejalan dengan alur pemikiran di atas maka sasaran analisa potensi lingkungan obyek wisata ini adalah untuk mendapatkan gambaran tentang peranan potensi lingkungan dalam peningkatan arus pengunjung. Di samping data arus pengunjung yang ternyata sulit diperoleh secara akurat, penelitian ini pun tidak dimaksudkan untuk dapat memberikan ramalan secara pasti di kemudian hari tetapi dapat memperlihatkan kecenderungan pertumbuhan dan pengembangan yang mungkin terjadi jika peluang-peluang yang terungkap dalam penelitian ini dapat direalisasikan
Keyword: 

Judul: Model Pengembangan Desa Wisata di Kabupaten Karo Provinsi Sumatera Utara.
Abstrak: Kunjungan wisatawan mengalami pertumbuhan rata-rata sebesar 21.18 persen setelah peristiwa meletusnya Gunung Sinabung. Upaya pengembangan destinasi wisata dalam bentuk desa wisata dapat meningkatkan daya tarik objek wisata dan mendukung peningkatan jumlah kunjungan wisatawan ke Kabupaten Karo. Penelitian ini bertujuan mengidentifikasi potensi pengembangan wisata, menganalisis dan menentukan lokasi desa wisata dan merekomendasikan pola pengembangan dan pengelolaan desa wisata di Kabupaten Karo. Analisis yang digunakan adalah statistika deskriptif, pairwise comparison, dan metode perbandingan eksponensial (MPE). Penelitian menunjukkan potensi wisata Kabupaten Karo terdiri dari potensi alam, potensi pertanian, potensi budaya dan produk khas yang tersebar di Kabupaten Karo. Analisis penentuan lokasi menunjukkan desa yang paling potensial untuk pengembangan desa wisata adalah Desa Siosar Kecamatan Merek. Pengembangan aktivitas wisata Desa Siosar dilakukan dengan memanfaatkan potensi desa yaitu hutan pinus, Gunung Sibuaten, peternakan, kebun petik sendiri, dan aula atraksi budaya, serta merancang pembagian areal Desa Wisata Siosar. Pengelolaan Desa Wisata Siosar dilakukan oleh BUMDes Siosar, bekerjasama dengan masyarakat dan organisasi yang ada di Desa Siosar.
Keyword: desa wisata, MPE, pairwise comparison, potensi desa

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