Judul: Pengaruh kapur sirih terhadap penanganan bulu babi dan kualitas gonad bulu babi tripneustes gratilla (linnaeus) dan echinorthrix calamaris (Pallas)
Abstrak: Penelitian ini bertujuan untuk mengetahui pengaruh konsentrasi dan lama perendaman kapur sirih terhadap kualitas gonad bulu babi T. gratilla dan E. calamaris. Perlakuan perendaman yang digunakan dalam penelitian utama adalah konsentrasi kapur sirih 0,6%, 0,8% dan 1,0% dan 0% sebagai kontrol, dengan waktu perendaman 25 menit, 30 menit dan 35 menit. Parameter yang diuji adalah rupa, bau, warna, dan tekstur, pH, kadar air, kadar abu, kadar kalsium, dan kadar garam. Dari pengamatan organoleptik diperoleh hasil bahwa panelis lebih menyukai penampakan gonad E. calamaris daripada gonad T. gratilla yaitu pada perlakuan konsentrasi 1% waktu perendaman 25 menit. Untuk uji bau. panelis lebih menyukai bau gonad pada perlakuan konsentrasi 1% waktu 25, 30 dan 35 menit dari jenis gonad E. calamaris. Sedang untuk uji warna gonad diperoleh hasil bahwa panelis lebih menyukai warna gonad E. calamaris pada perlakuan konsentrasi 1% dengan waktu perendaman 25 dan 30 menit daripada gonad T. gratilla. Untuk uji tekstur kedua jenis gonad panelis menyukai perlakuan konsentrasi 1% waktu 30 dan 35 menit. Pada pengamatan pH diperoleh hasil bahwa perendaman dalam larutan kapur sirih berpengaruh nyata terhadap pH gonad. Kisaran pH gonad T. gratilla berada diantara 8,45-9,73 dan pH gonad E. calamaris berada diantara 6,9-9,32 sedang pH gonad kontrol 6,4. Dalam hal ini pH gonad T. gratilla cendrung berada diatas pH gonad E. calamaris. Pada pengamatan kadar air gonad diperoleh hasil bahwa kadar air gonad T. gratilla berada pada kisaran 64,67%-75,59% dan gonad E. calamaris berada diantara 64,41%-76,05%. Kadar air kedua gonad cendrung mengalami penurunan dibandingkan dengan kadar air gonad kontrol. Hal ini menunjukkan bahwa tekstur gonad mengalami pengerasan. Pada pengamatan kadar abu gonad diperoleh bahwa kadar abu gonad cendrung mengalami peningkatan dibandingkan kadar abu gonad kontrolnya, hal ini terjadi karena adnya tambahan mineral kalsium yang diperoleh dari larutan kapur sirih-air laut. Kadar abu gonad ...
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Judul: Pengaruh Garam, Gula dan Lama Fermentasi terhadap Mutu Pasta Fermentasi Gonad Bulu Babi Echinothrix calamaris.
Abstrak: Penelitian ini dilaksanakan pada bulan Oktober sampai Desember 1999, bertempat di Laboratorium Instalasi Penelitian Perikanan Laut - Slipi, Jakarta. Tujuan penelitian ini untuk mengetahui pengaruh garam dan gula terhadap mutu pasta fermentasi gonad bulu babi Echinothrix calamaris. Dalam penelitian ini diterapkan 3 faktor perlakuan yaitu perlakuan konsentrasi garam (A) yang terdiri dari 3 taraf yaitu A1, A2 dan A3; perlakuan konsentrasi gula (8) yang terdiri dari 3 taraf yaitu B0, B1 dan B2; dan perlakuan lama fermentasi tahap kedua, dimana pengamatan dilakukan pada minggu ke 0,2, 4,6 dan 8.
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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