Judul: Karakteristik buruh dan pengelolaan tenaga kerja agroindustri di pedesaan : studi kasus buruh pabrik PT. Tehnusamba Sukabumi, Kecamatan Nyalindung, Kabupaten Sukabumi
Abstrak: Besarnya jumlah orang yang terlibat di sektor non-pertanian, terutama disebabkan oleh adanya kegiatan tersebut di desa. Adanya industri atau pabrik yang berlokasi di pedesaan akan menyebabkan kesempatan penduduk usia kerja menjadi lebih besar kerja, apabila kegiatan industri tersebut dapat dilakukan oleh tenaga kerja misalnya buruh dengan pendidikan rendah atau memerlukan ketrampilan yang dapat segera diajar- kan pada tenaga berpendidikan rendah tersebut. Tujuan khusus dari pabrik Tehnusamba Sukabumi perusahaan agroindustri di daerah hilir antara untuk meningkatkan produksi teh rakyat dengan cara sebagai lain peremajaan, rehabilitasi dan perluasan serta peningkatan mutu; meningkatkan pendapatan petani teh serta memperluas kesempatan dan lapangan kerja. Keberadaan unit manajemen perusahaan tersebut bagi masyarakat pedesaan dan sekitarnya yang mempunyai kesempatan untuk bekerja, diduga berkaitan dengan semakin baiknya transportasi dan komunikasi antar daerah, tingkat pendidikan dan desakan hasrat untuk memperbaiki kehidupan yang lebih baik, perubahan kesempatan kerja...
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Judul: Sistem manajemen perkebunan teh rakyat : studi kasus PT Teh Nusamba Indah, Kabupaten DT UII Sukabumi
Abstrak: Studi mengenai sistem manajemen perkebunan teh rakyat adalah menelaah manajemen pengorganisasian kegiatan produksi antara pabrik pengolah teh dengan usahatani teh. Penelaahan didasarkan kepada aspek-aspek manajemen pabrik Tehnusamba, manajemen usahatani teh dan manajemen hubungan fungsional antara Tehnusamba dengan petani teh. Tujuan studi sistem manajemen perkebunan teh rakyat adalah menelaah sistem. pengorganisasian kegiatan produksi teh rakyat yaitu PT Tehnusamba Indah dan usahatani teh rakyat khususnya ditinjau dari aspek perencanaan strategis. Penelaahan sistem manajemen perkebunan teh rakyat dilakukan dengan analisis SWOT yaitu menelaah kekuatan, kelemahan, kesempatan dan hambatan dari ketiga aspek manajemen yang terdapat di dalam sistem manajemen perkebunan teh rakyat. Dari hasil analisis dapat disimpulkan bahwa manajemen usahatani teh rakyat relatif baik, namun belum dapat memenuhi jumlah, mutu serta kontinuitas pemasokan pucuk sesuai harapan pabrik Tehnusamba. Hal ini disebabkan fungsi Unit Usaha Petani Teh dan Kelompok Tani belum dapat diandalkan sepenuhnya sebagai pembina dan usahatani teh anggotanya.
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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