Judul: Komunitas Amfibi di beberapa Sungai pada Suaka Margasatwa Nantu Provinsi Gorontalo
Abstrak: Amfibi merupakan salah satu satwa yang hidup tidak jauh dari sumber air. Keberadaan amfibi sangat dipengaruhi oleh kondisi dan tipe habitat dimana beberapa jenis dapat ditemukan di hutan rendah gangguan atau di hutan terganggu. Penelitian ini dilakukan di beberapa sungai pada Suaka Margasatwa Nantu untuk mengidentifikasi komposisi jenis amfibi, pemilihan mikrohabitat oleh amfibi, dan pola penyebaran amfibi. Pengukuran mikrohabitat dilakukan untuk mendapatkan data mengenai kecepatan arus, kedalaman sungai, tutupan kanopi, lebar sungai, dan jenis substrat. Hasil penelitian menemukan 490 ekor katak dari 15 jenis amfibi tergolong dalam empat famili. Limnonectes cf modestus merupakan jenis yang selalu ditemukan di semua sungai dengan kelimpahan tertinggi (519 individu/ha) di hutan sekunder. Habitat sungai di hutan primer dan hutan sekunder memiliki kesamaan komunitas amfibi paling tinggi (86.6%), sedangkan komunitas amfibi pada sungai di kebun tebu paling berbeda dengan sungai lainnya. Analisis menunjukkan bahwa jenis amfibi cenderung memilih kondisi mikro habitat tertentu, seperti Fejervarya limnocharis sangat erat hubungannya dengan kondisi sungai yang sangat lebar dengan tutupan kanopi terbuka. Amfibi di sungai umumnya menyebar secara mengelompok.
Keyword: komposisi jenis amfibi, mikrohabitat, pola penyebaran

Judul: Keanekaragaman Jenis dan Sebaran Spasial Amfibi di Suaka Margasatwa Nantu Gorontalo dan Sekitarnya
Abstrak: Nantu Wildlife Reserve area is one of tropical remnant forest in Sulawesi, a part of Wallaceae bioregion. Nantu Wildlife Reserve was established especially to conserve babirusa, and therefore amphibians data is not available yet. Objectives of the research were to identify types of habitat and species diversity of amphibians in Nantu Wildlife Reserve and its surrounding areas. Data were collected on 14th to 27th of June 2013. Observations were made at seven locations focusing on the east area of the Nantu Wildlife Reserve. Species data were collected using Visual Encountering Survey (VES) combined with Time Search methods. During observation, 4 families were found consisted of 17 species. A map of the spatial distribution of amphibians showed that there was species composition differences among four types of habitats (fields, gardens, low disturbed forest, undisturbed forest). Family of Dicroglossidae was the most common family. There was a clear distinction composition of amphibians between the of amphibians in forest areas with areas that have been cultivated/disturbed by humans.
Keyword: Sulawesi, Nantu Wildlife Reserve, diversity, amphibian

Judul: Protokol legalisasi digital menggunakan algoritme MD5 dan RSA
Abstrak: The need for legalization of certificate diplomas and transcripts to apply for a job is a reasonable requirement, but sometimes the collection deadline given is very short. Noting the need for rapid validation system for the legalization of certificate diplomas and transcripts, a securing system that can legalize and give legitimacy to the diploma and transcript is needed. One of these mechanisms is digital signatures. This research applied MD5 and RSA to create digital signatures of certificate diplomas and transcripts. MD5 is a function that processes an arbitrary length inputs into outputs with a fixed length, ie 128 bits. RSA is an encryption-decryption asymmetric algorithm. The key used to encrypt a plaintext differs from the key used to decrypt the ciphertext into its original plaintext. Digital signatures generated from the plaintext by using the MD5 algorithm is then encrypted using the RSA algorithm. The result of RSA encryption called digital signatures. The implementation of digital signatures can shorten the time digital legalization of certificate diplomas and transcripts and ensure the security and validity of information
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