Judul: Analisis Faktor Faktor Yang Mempengaruhi Produksi dan Pendapatan Usaha Budidaya Ikan Mas Koki di Kelompok Budidaya Tugu Mina Asri, Kabupaten Tulungagung.
Abstrak: Goldfish is one of the potential fisheries products for increasing production to meet demand at Indonesia and other country. However, the production of a goldfish is still volatile at farmers.Tugu Mina Asri Fish Farming is a group that often get credit for rated well in cultivating ornamental fish goldfish. This study uses a Cobb-Douglas function to analyze the factors that the affect production and farmer income of ornamental fish goldfish. This study shows farming income of Rp 109,324,000.00 and R/C ratio of 1.68 so that the cultivation of goldfish is profitable and feasible. While the factors that influence the production is stocking density, feed pellets, and medicine.
Keyword: Tulungagung, Income, Factor Production, Goldfish

Judul: Analisis Efisiensi Faktor yang Mempengaruhi Produksi Ikan Koi di Kecamatan Cisaat Kabupaten Sukabumi
Abstrak: Koi fish (Cyprinus carpio) is a leading commodity of freshwater fish that attracted many people. Koi fish is not only kept by hobiis but also it’s interested and profitable commodity. Cisaat is one of producer of Koi fish that located in Northern Sukabumi, West Java, Indonesia. The turnover of Koi fish business in Cisaat can reach IDR 20 million per month. However, productions are still fluctuative and high quality products are still difficult to achieved, so the research study about the factors that influence Koi fish’s production is necessary to do. The purposes of this study are (1) to identify the factors that influence Koi fish’s production in Cisaat; (2) to analyze the efficiency level of the use of production factors of Koi fish in Cisaat; and (3) to identify consumer’s transaction motive to purchase koi fish in Cisaat. The production function model is analyzed by using multiple linear regeression analysis, production efficiency analysis are technically and economically, and consumer’s transaction motive to purchase Koi fish is analyzed by using descriptive analysis. The result of the research study showed that seed, manure, and medicines significantly affected Koi fish’s production. The use of these production factors has been achieved the efficiency technically but not economically yet. The main transaction motive to purchase Koi fish is because of its beauty on it’s body shape and colors with purchasing purpose is hobby.
Keyword: Bogor Agricultural University (IPB), transaction motive, production, multiple linear regression analysis, Koi fish, efficiency

Judul: Perbandingan Algoritma Message Digest 5 (MD5) Dan Secure Hash Algorithm 1 (Shai) Untuk Autentikasi Pesan
Abstrak: Seiring dcngan meningkatnya penggunaan internet sebagai media pertukaran pcsan. metodc pcngamanan pcsan menjadi sangat penting. Nilai suatu pesan yang ingin dijaga keutuhan atnu intcgritasnya menycbabkan pesan tcrscbut hanya baleh dimodifikasi olch pihak yang bcrhak. Namun pada rcalitanya, pesan tersebut akan mendapat ancaman dari scorang penyusup. Bentuk ancaman terjadi apabiJa pcnyusup dcngan suatu cara. dapat mengubah isi pesan terscbut untuk bcrbagai kepcntingan. Apabila isi pesan telah bcrubah dad bentuk aslinya, maka pesan terscbut dikatakan sudah tidak aulcnlik (asli) Iagi. Snatn metodc yang efektif untuk mcnguji kcautentikan suatll pesan digllnakan tcknik kriptografi. Pada kal)'a ilmiah ini akan dibahas algoritma Message Digest 5 (MDS) dan Secure !-lash Algorithm (SHAI) untuk autentikasi pesan.
Keyword: