Judul: Dampak proyek pengembangan perkebunan rakyat Sumatera Barat (P3RSB) terhadap pembangunan Desa: kasus di Kecamatan Kotabaru Abaisiat
Abstrak: Kecamatan Koto Baru dalam Kabupaten Sawah Lunto Sijunjung. Kecamatan ini mempunyai luas termasuk salah satu kecamatan areal 1.698 kilometer persegi, penduduknya 30 kalau dibandingkan dengan jumlah jiwa / km termasuk daerah yang jarang. Daerah ini sudah sejak lama mengenal budidaya karet, hal ini karena kondisi lingkungan alamnya turut memberi sokongan, 57,3 persen sekunder dari luas arealnya merupakan yang sangat cocok untuk tanaman keras hutan dimanal primer dan terutama karet.
Keyword: Farm enterpreuneurs, Rubber industry

Judul: Dampak perubahan faktor internal dan eksternal terhadap ekonomi rumahtangga petani karet rakyat di Kabupaten Kotawaringin Barat, Kalimantan Tengah
Abstrak: Indonesia memiliki luas areal karet terbesar di dunia, namun dengan jumlah produksi terbesar kedua setelah negara Thailand. Hal ini diakibatkan oleh nilai produktivitas karet Indonesia yang rendah akibat dari kurangnya pengembangan Perkebunan Rakyat (PR) karet yang memiliki proporsi terbesar dari total luas perkebunan karet di Indonesia. Pelaksanaan program Perkebunan Inti Rakyat (PIR) bertujuan untuk meningkatkan kesejahteraan petani rakyat dengan memberikan teknologi, pelatihan dan informasi serta meningkatkan produktivitas perkebunan. Salah satu daerah di Indonesia yang mengimplementasikan program PIR adalah Kabupaten Kotawaringin Barat, Kalimantan Tengah. PR di Kabupaten Kotawaringin Barat terbagi menjadi PR karet plasma (PIR) dan mandiri. Tujuan penelitian adalah untuk: (1) mendeskripsikan karakteristik petani karet rakyat dan pelaksanaan pola PIR, (2) menganalisis faktor-faktor yang mempengaruhi keputusan rumahtangga petani karet rakyat dalam alokasi waktu kerja, produksi, pendapatan, dan pengeluaran rumahtangga, dan (3) menganalisis dampak perubahan faktor internal dan eksternal terhadap ekonomi rumahtangga petani karet rakyat di Kabupaten Kotawaringin Barat, Kalimantan Tengah. Penelitian menggunakan data cross section dengan sampel rumahtangga petani karet plasma dan mandiri di Desa Sungai Hijau dan Pangkalan Satu pada tahun 2013. Model ekonomi rumahtangga petani dibangun sebagai suatu sistem persamaan simultan dan diestimasi menggunakan metode Two Stage Least Squares (2SLS). Petani karet rakyat plasma dapat meningkatkan kesejahteraan dengan adanya kombinasi antara peningkatan pendapatan selain usahatani karet dengan peningkatan investasi sumberdaya manusia sedangkan petani karet rakyat mandiri dapat meningkatkan kesejahteraan dengan adanya penetapan umur tanaman karet dan penambahan luas kebun karet.
Keyword: household economic, rubber, welfare, Nucleus Estate Smallholder

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