Judul: Analisis Kebutuhan dan Ketersediaan Air Bersih Kota Bogor Melalui PDAM Tirta Pakuan
Abstrak: Salah satu kebutuhan hidup utama adalah kebutuhan akan air bersih. Tujuan dari penelitian ini adalah menganalisis kebutuhan air bersih dan ketersediaan air di setiap zona PDAM Tirta Pakuan dan menganalisis kesesuaian antara kebutuhan dan ketersediaan air bersih. Perkiraan total kebutuhan air bersih pada Zona 1 hingga 6 PDAM Tirta Pakuan untuk 10 tahun ke depan berdasarkan standar kebutuhan air bersih berturut-turut 18.695.419,25 m3/tahun, 4.351.946,16 m3/tahun, 12.694.875,85 m3/tahun, 68.467.951,29 m3/tahun, 3.522.397,21 m3/tahun dan 8.800.548,68 m3/tahun. PDAM Tirta Pakuan memperoleh air dari beberapa sumber yaitu Kota Batu, Bantar Kambing, Tangkil, Palasari dan dari beberapa WTP yaitu WTP Cipaku, WTP Dekeng 1, WTP Dekeng 2, WTP Dekasari 2, WTP Palasari dan WTP Cikereteg. Ketersediaan air di Zona 1, Zona 4, Zona 5 dan Zona 6 pada 10 tahun mendatang tidak dapat terpenuhi, sedangkan untuk Zona 2 dan Zona 3 masih dapat terpenuhi. Oleh karena itu, dibutuhkan peningkatan kapasitas produksi PDAM Tirta Pakuan dengan sistem distribusi yang baik sehingga PDAM Tirta Pakuan dapat mencukupi seluruh kebutuhan air penduduk Kota Bogor.
Keyword: air bersih, kebutuhan air, ketersediaan air

Judul: Analisis Sistem Distribusi Air Bersih Daerah Pelayanan Zona 6 PDAM Tirta Pakuan Bogor, Jawa Barat
Abstrak: Air bersih merupakan kebutuhan dasar bagi manusia sehingga sektor air bersih mendapat prioritas dalam penanganan dan pemenuhannya. PDAM sebagai perusahaan daerah pengelola air bersih seharusnya mampu untuk memenuhi kebutuhan tersebut. Tujuan penelitian ini adalah melakukan analisis kinerja sistem distribusi air bersih yang meliputi kualitas air, kuantitas (debit) dan kontinuitas, melakukan analisis kecukupan air bersih serta melakukan analisis hidrolika yang meliputi parameter tekanan, kecepatan dan headloss. Berdasarkan analisis yang dilakukan, kualitas air bersih di daerah pelayanan zona 6 telah memenuhi syarat baku mutu Permenkes No 492/Menkes/Per/IV/2010. Namun, pasokan air sering terhenti di daerah pelayanan yang disebabkan oleh kebocoran. Kebutuhan air di daerah pelayanan zona 6 sudah tercukupi, karena kebutuhan air sebesar 125,6 lt/dt sedangkan total produksi air sebesar 132,1 lt/dt. Berdasarkan analisis dengan software EPANET 2.0, nilai tekanan tertinggi terjadi pada node 8 sebesar 8,8 bar dan terendah pada node 12 sebesar 0,1 bar. Nilai headloss tertinggi sebesar 9,39m dan kecepatan tertinggi sebesar 1,37 m/dt terjadi pada pipa 1. Nilai headloss terendah sebesar 0,07 m dan kecepatan terendah 0,07 m/dt terjadi pada pipa 6.
Keyword: air bersih, EPANET 2.0, kebutuhan air, sistem distribusi

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