Judul: Laporan Telaah Lapangan Perencanaan Pengembangan Budi Daya Tanaman Pangan Dengan Menggunakan Pertimbangan Kondisi Iklim Setempat Di Kabupaten Kudus Jawa Tengah
Abstrak: Iklim/cuaca merupakan salah satu faktor lingkungan yang sangat berpengaruh terhadap pertumbuhan, perkembangan dan produksi suatu tanaman. Sampai saat ini faktor ter- sebut masih belum banyak diperhatikan karena keterbatasan informasi yang dapat diterima oleh para petani. Perbedaan ketinggian tempat dari permukaan laut akan menimbulkan adanya perbedaan penerimaan unsur-unsur iklim sehingga sedikit banyak akan berpengaruh terhadap kegiatan pembudidayaan tanaman pangan. Kecamatan Undaan dengan luas 7177.030 ha bertipe i- klim D₂ (menurut Oldeman), mempunyai penduduk 52404 jiwa dengan rata-rata 731 jiwa/km². Sebagian besar penduduknya bermatapencaharian sebagai petani. Kecamatan ini terletak pada ketinggian sekitar 10 meter dari permukaan laut. Po- la pergiliran tanaman di wilayah ini adalah padi-palawija- bera. Di wilayah ini sering mengalami kegagalan dalam u- saha taninya karena sering mengalami banjir kalau musim penghujan dan kekeringan jika kemarau. Beberapa desa di wilayah ini penanaman padi dilakukan pada musim kemarau dengan sistem gadu. ...
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Judul: Aplikasi sig dan penginderaan jauh dalam penentuan kecukupan dan prediksi luasan ruang terbuka hijau sebagai rosot CO2 di Kabupaten Kudus, Jawa Tengah
Abstrak: Kabupaten Kudus sebagai wilayah berkembang akan mengalami pengalihfungsian lahan bervegetasi menjadi pemukiman dan fasilitas publik yang lain, serta mengalami penambahan jumlah konsumsi bahan bakar. Kegiatan tersebut menyebabkan terjadinya peningkatan gas CO2 di udara. Hal ini dapat menurunkan kualitas lingkungan hidup, sehingga salah satu cara efektif dan efisien untuk mengurangi dampak tersebut adalah dengan penerapan konsep ruang terbuka hijau (RTH) dalam perencanaan tata ruang wilayah Kabupaten Kudus. Penelitian ini bertujuan untuk (1) Mengetahui kecukupan luasan RTH sebagai penyerap gas CO2 di tahun 2011 dan (2) Menentukan prediksi kebutuhan luasan RTH di Kabupaten Kudus tahun 2016. Hasil dari penelitian ini diharapkan dapat memberikan informasi dan masukan di dalam proses pengambilan keputusan untuk pengelolaan, pengembangan, perencanaan dan pembangunan RTH di Kabupaten Kudus.
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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