Judul: The Productivity of Progo and Joglo Strains of Eri Silkworm (Samia cynthia ricini)
Abstrak: Ulat sutra eri S. c. ricini dari famili Saturniidae merupakan penghasil serat sutra yang digunakan sebagai bahan baku pembuatan kain. Genetika ulat sutra eri S. c. ricini dapat direkayasa untuk membuat galur-galur baru yang dapat dipelihara di lingkungan tertentu. Galur sintentik progo dan joglo dibentuk melalui metode seleksi dan persilangan yang dapat dipelihara di suhu panas dan kelembapan rendah. Penelitian ini bertujuan untuk menganalisis produktivitas ulat sutra eri S. c. ricini galur progo dan joglo pada kondisi optimum. Perbedaan produktivitas keduanya dianalisis dengan menggunakan metode uji-T. Peubah yang diamati antara lain suhu dan kelembapan, konsumsi pakan, panjang, lebar, dan bobot tubuh ulat sutra, lama fase ulat, mortalitas, dan produktivitas kokon. Hasil penelitian menunjukkan bahwa galur progo memiliki hasil yang lebih tinggi pada parameter konsumsi pakan, panjang, lebar, dan berat larva, mortalitas, serta produktivitas kokon dibandingkan galur joglo. Perbedaan galur ulat sutra eri S. c. ricini memiliki pengaruh terhadap produktivitas yaitu pada peubah morfometrik dan produksi kokon., The eri silkworm S. c. ricini from Saturniidae is a silk fiber producer used as a raw material for making cloth. The genetics of the eri silkworm of S. c. ricini can be fabricated to make new strains that can be maintained in a specific environment. The progo and joglo strain was created through selection methods and crossbreeding that can be maintained in hot temperatures and low humidity. This study aimed to determine the productivity of the progo and joglo strains under optimum conditions. The differences in their productivity were evaluated using the T-test method. Parameters observed included temperature and humidity, feed consumption, larval body length, width and weight, length of silkworm phase, mortality, and cocoon. The results showed that the progo strain had higher results in the parameters of feed consumption, larval length, width, weight, mortality, and cocoon productivity than the joglo strain. The differences strain of eri silkworm S. c. ricini had an effect on productivity on morphometric variables and cocoon production.
Keyword: joglo, productivities, progo, Samia cynthia ricini, strain, galur, joglo, produktivitas

Judul: Productivity of Eri Silkworm (Samia cynthia ricini) of White  Plain and Blue Plain Colour of Larvae
Abstrak: Industri tekstil merupakan salah satu komoditas unggul di Indonesia yang memanfaatkan serat ulat sutra sebagai bahan baku tekstil. Samia cynthia ricini mampu berkembang biak lebih dari dua generasi dalam satu tahun (multivoltine). Faktor yang dapat memengaruhi produktivitas ulat sutra, antara lain kondisi lingkungan, kecukupan nutrisi, genetik, dan manajemen pemeliharaan. Tujuan penelitian ini adalah menganalisis produktivitas ulat sutra eri (S. ricini) pada warna larva putih polos dan biru polos. Penelitian ini menggunakan larva S. ricini berwarna putih polos dan biru polos. Parameter yang diamati antara lain suhu dan kelembapan, konsumsi pakan, panjang, lebar, dan bobot tubuh larva, lama tiap fase instar, mortalitas per instar, karakterisasi kokon, kualitas serat sutra, dan pewarisan pola warna larva. Data yang diperoleh dianalisis menggunakan uji-T. Hasil penelitian menunjukkan morfometrik tubuh larva pada warna biru polos lebih tinggi dibandingkan warna putih polos. S. ricini warna biru polos memiliki gen yang lebih dominan, sehingga mewariskan dua pola warna, yaitu 83% putih polos dan 17% biru polos., The textile industry is one of the superior commodities in Indonesia that uses silkworm fiber as a textile raw material. Samia cynthia ricini is able to breed more than two generations in one year (multivoltine). Factors that can affect silkworm productivity are environmental conditions, nutritional adequacy, genetics, and rear management. The purpose of this research is to analyzed the productivity of eri silkworms (S. ricini) of white plain and blue plain colour of larvae. This research used S. ricini larvae of white plain and blue plain. The observed parameters include temperature and humidity, feed consumption, length, width, and body weight of larvae, length of each instars phase, mortality per instars, quality of cocoon, quality of silk fibre, and inheritance of larvae colour. The data were analyzed using the T test. The result showed that the morphometric of blue plain was higher than white plain. Blue plain of S. ricini has more dominant gene, thus inheriting two color patterns, with the percentage of 83% for white plain and 17% for blue plain.
Keyword: blue plain, colour of larvae, productivity, Samia cynthia ricini, white plain

Judul: Analisis keamanan konstruksi fungsi hash berbasis sandi blok kunci simetrik (Kajian Teoritik)
Abstrak: Hash function is used to secure the integrity and authenticity of a massege, so that the message is save. The message which will be secured, will be attached to hash/message digest/digital signature value fro, the message. A secure hash function is the one which has pre-image resistance, 2nd pre-image resistance and collision resistance. Hash function has been classified into hash keyed function (Message Authentication Codes/MAC) and unkeyed (Modification Detection Codes/MDC)
Keyword: