Judul: Penentuan Beban Pencemaran dan Status Kualitas Perairan Sungai Karang Mumus Akl'bat Buangan Bahan Organik
Abstrak: Tujuan penelitian ini adalah untuk menentukan beban pencemaran dan status kualitas air Sungai Karang Mumus serta memperkirakan tingkat pencemaran pada waktu yang akan datang. Kegiatan penelitian telah dilaksanakan di perarran Sungai Karang Mumus, Kotamadya Samarinda dan Laboratorium Manajemen Sumberdaya Perairan, Fakultas Pertanian Universitas Mulawarman pada tanggal 5 September -28 Desember 1996. Pengamatan dilakukan di delapan lokas, enam lokasi berada di perairan Sungai Karang Mumus, yaitu stasiun 1 sampai dengan stasiun 6 serta dua lokasi berada di perairan Sungai Mahakam, yaitu stasiun 7 dan stasiun 8. Pengambilan contoh air dilakukan di setiap stasiun secara komposit vertikal dan horizonta dengan menggunakan alat "kemmerer water sampler", sebanyak empat kali dengan interval waktu setiap dua minggu. Stasiun (lokasi) pengambilan contoh untuk hewan bentos makro sama dengan kualitas air. Hewan bentos makro yang berada di alas dan di dalam lumpur sedirnen diambil dengan menggunakan " Ekman grab ". Identifikasi dilakukan dengan mengggunakan kunci identifikasi menurut Quigley (1977), Edmondson (1959) dan Jutting (1953 dan 1956). dst ...
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Judul: Analisis Status Mutu Air dan Formulasi Strategi Pengelolaan Sungai Karang Mumus Kota Samarinda
Abstrak: The aim oj this research was to analyse the water quality status and its effect to ecological component, community structure of makrozoobenthos and g ublic health and also to formulate the strategy jor managing the pollution in l..UJ.arang Mumus river, Samarinda City. This research was conducted from March '$J Mei 2009. Samples of water and makrozoobenthos were taken 3 times every ~onth in 5 stations along the Karang Mumus River. Data of water quality were .ama1yzed using STORET method to find the water quality status. Data of 'ilnakrozoobenthos structure were analyzed to find the abundance, diversity index, ~imilarity index and domination index. Interview also done to find the perseption ~bout pollution from the community along the Karang Mumus River and the ~'Overment. SWOT and AHP were conducted to find the best strategy based on the -:!!lain priority Jor managing the pollution in Karang Mumus River. ; Pollution in Karang Mumlls River caused by community activity along the ~arang Mumus River such as home living, industlY, commercial area that :tfasting the river with the pollutant without any t.hreatment. The result shown that !!he water quality status wasn't suitable Jor the 1st , 2nd and 3rd class standard based ~n PP No. 82 Tahun 2001. It'sjust suitable for 4th class that usefullforfreshwater ~quaculture, ranch and famling activity. The community structure of r:JJ1akrozoobenthos shown the low stability community, waters in stress condition fJrnd some domination of any species. Throught the public health shown that ~'djm'e" was the most disease attack Samm'inda community. This condition showed that the community activity along the Karang Mumus River caused the decrease oj the water quality. Based on SWOT Analysis and AHP, the main priority to manage the pollution are: (1). Coordination with all stakeholder in order to save the environmental of Karang Mumus river, (2). Monitoring, evaluating and cooperating with the community, (3). Socialization the programe to save the Karang Mumus River to all stakeholder, (4). Relocation of the community and normalization of the river (5). Increase self belonging to conserve and len·!! enforcement, (6). Develop the communal water treatment and (7). Develop the ecotourism.
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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