Judul: The Abundance of Hour-Glass Toad (Leptophryne borbonica Tschudi, 1838) at Bodogol Resort Gunung Gede Pangrango National Park
Abstrak: Leptophryne borbonica merupakan jenis amfibi yang bergantung pada aliran sungai, kondisi fisik sungai akan mempengaruhi kelimpahan dari L. borbonica. Monitoring populasi perlu dilakukan untuk mengetahui perbedaan kelimpahan antar waktu. Tujuan dari penelitian ini menduga kelimpahan L. borbonica dan komposisi jenis lainnya serta identifikasi penggunaan mikrohabitat L. borbonica di Resort Bodogol TN Gunung Gede Pangrango. Penelitian dilakukan di Sungai Cisuren dan Sungai Cikaweni menggunakan metode perjumpaan visual dikombinasikan dengan transek sampling. Penelitian ini memperoleh 12 jenis amfibi dari 5 famili berbeda. Leptophryne borbonica, Limnonectes kuhlii, Megophrys montana, dan Chalcorana chalconota merupakan 4 spesies dominan yang ditemukan di setiap lokasi pengamatan dengan nilai kelimpahan tertinggi. Rata-rata kelimpahan L. borbonica di Sungai Cisuren yaitu 18,70 ± 7,79 ind/100 m, di Sungai Cikaweni-1 rata-rata kelimpahan yaitu 0,80 ± 1,17 ind/100 m, dan di Sungai Cikaweni-2 rata-rata kelimpahan yaitu 0,20 ± 0,40 ind/100 m. Leptophryne borbonica dapat ditemukan di sungai kecil yang mengalir sepanjang tahun dengan kondisi air yang jernih, kecepatan arus sungai tergolong lambat hingga sedang, ditemukan pada substrat batu, dan ditemukan menempel di dedaunan sekitar sungai. Kata kunci: kelimpahan, kodok jam pasir, sungai
Keyword: Abundance, Hour-glass toad, Stream

Judul: Tingkat kesesuaian dan freferensi habitat Leptophryne cruentata, Tschudi 1838 di Taman Nasional Gunung Gede Pangrango
Abstrak: Fire Toad (Leptophryne cruentata, Tschudi 1838) is an endemic toad found only in the western of Java especially in Gunung Gede Pangrango National Park. According to the 2009 IUCN Red List of Threatened animal, this species is catogorized as critically endangered species. At present there are not complete data to desribe the habitat of this species. Base on the observation showed that the species founded in Rawa Denok, Rawa Gayonggong and Curug Cibereum. The objectives of this research were to identify the habitat preference habitat and to estimate the extent of suitability habitat of Fire Toad in GPNP. This study was carried out in GPNP on April 2008. Based on analisis factor, the dominant habitat factors prefered fire toad are distance from water, distance from human line dan the elevation. Using Kruskall Waliss analysis, the result distance from human line very significant (p< 0,05). Digital environmental layers such as elevation, slope aspect, temperature, and vegetation type may be incorporated into predicted habitat suitability. Principal Componen Analysis method was used to analyse suitability habitat map using ERDAS Imaginer Ver 9.1 and ArcView Ver 3.3. Based on the scoring and spatial analysis, the estimation of habitat with low habitat suitability is about 16.077,847 ha, habitat with midlle suitability is about 7.686,023 ha and habitat with high suitability is about 653,847 ha.
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Judul: Pengembangan Sistem Autentikasi Voter pada Central Legitimization Agency Menggunakan Media Mifare Smart Card®
Abstrak: Cryptography becomes one of the important things in the development of electronic voting system. The voting system using internet network technology aims to reduce considerable calculation time as well as necessary human resources. Securing lines of communication between voting machines and servers is needed to communicate securely. The identity of the voters, which is used for authentication voting process is stored in Mifare smart card called identity card. Every identity card which contains unique identification and nomor induk kependudukan will be authenticated in Central Legitimization Agency server. Card identity is hashed with SHA-2 and encrypted with session key to assure that the integrity of data is not changed by others. Session key is distributed from CLA to voting machines which are encrypted with asymmetric RSA algorithm. Only voting machines can decrypt the ciphertext to get the session key as plaintext. The list of the voters who are allowed to vote is stored in the CLA database. The decrypted plaintext must be identical to one of the voters in the voters list, for the voter to be able to vote. Only one vote for each of the voters can be casted. If the time limit is reached, CLA will distribute the vote count to the Central Tabulating Facilities. Considering the complexity in building a complete secure online election voting process, this research is only focused developing a system to authenticate the voter identity in CLA from identity card which is stored in Mifare smart card.
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