Judul: Evaluasi pengelolaan perumahan dilihat dari segi konservasi biofisik : studi kasus perumahan Kombos Permai dan Wenang Permai - Menado)
Abstrak: Studi ini dilatarbelakangi oleh dasar pemikiran penulis tentang pentingnya konservasi biofisik di kawasan perumahan karena beberapa alasan berikut. Pertama, lahan yang diperuntukkan bagi pembangunan perumahan oleh developer adalah besar, terlihat dari persentasi unit rumah perumahan terhadap kebutuhan rumah yang tinggi (di Manado sebesar 70% untuk tahun 1994-1995). Kedua, pembangunan perumahan oleh developer relatif memudahkan pengontrolan dan penerapan konservasi biofisik dengan teratur dan terencana. Ketiga, kebutuhan manusia akan lingkungan layak huni untuk perkembangan diri optimum harus terpenuhi terutama pada tempat tinggalnya. Keempat, praktisi yang paling potensial dalam konservasi biofisik yaitu masyarakat umum memiliki keterkaitan langsung dengan perumahan. Tujuan umum studi adalah mempelajari pengelolaan kawasan perumahan yang mendukung konservasi biofisik dengan mempertimbangkan kondisi lingkungan huni yang diinginkan pemukim dan pelaksanaan teknis yang memungkinkan. Tujuan khususnya yaitu: 1. Mengidentifikasi dan menganalisis perubahan lingkungan biofisik di kawasan perumahan. 2. Menganalisis persepsi dan sikap developer dan pemukim yang berhubungan dengan perilaku konservasi biofisik. 3. Mengevaluasi upaya-upaya yang dilakukan developer dalam melaksanakan konservasi biofisik di perumahan yang dikelolanya. 4. Memberi usulan konservasi lingkungan biofisik perumahan.
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Judul: Pengelolaan pemeliharaan lanskap perumahan citra garden city, Jakarta Barat
Abstrak: Pembangunan perurnahail harus n~empertimbangkan beberapa aspek, antara lain, aspek ekononii, sosial, serta ekologi dari kawasan yang akan dibangun. Semakin sempit-nya lahan perkotaan mengakibatkan pembangunan permukiman banyak mengalami kendala. Kendala-kendala tersebut, di antaranya, semakin berkurangnya air bersih, lahan bennain anak, dan nlang terbuka I~ijau (RTEf), serta sanitasi yang buruk. Program pembangunan kota perIu dilalcsanakan untuk mengatasi masalah perumahan. Prograin ini, antara lain, menciptakan dan membangun permukiman yang nyaman dan sesuai dengall tata ruang daerah sekitarnya. Untuk mewujudkan program tersebut diperlukan perail serta swasta dan dukungan dari pemerintah.
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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