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: Abundance of Bleeding Frog (Leptophryne cruentata) at Cibodas, Tegallega, and Cisarua Resorts, Gunung Gede Pangrango National Park
Abstrak: Kodok merah (L. cruentata) merupakan salah satu jenis katak yang dianggap populasinya terus menurun selama 40 tahun terakhir. Monitoring kelimpahan dan kualitas habitat spesies ini harus terus dilakukan. Tujuan dari penelitian ini menduga kelimpahan dan mengidentifikasi mikrohabitat kodok merah serta katak jenis lainnya. Penelitian ini dilakukan di 6 lokasi di Taman Nasional Gunung Gede Pangrango pada Resort Cibodas, Tegallega, dan Cisarua dengan menggunakan metode perjumpaan langsung yang dikombinasikan dengan transek sampling. Kelimpahan paling tinggi kodok merah dijumpai di Curug Pariuk dengan kelimpahan per 100 m sebanyak 22,7 ± 23,6 ind/100 m. Kodok merah dapat hidup di sungai beraliran lambat dan deras. Salah satunya yaitu Curug Pariuk yang memiliki karakteristik curug berarus deras (50-100 cm/dtk), tutupan kanopi rapat (61-80%) sampai sangat rapat (81-100%), serta minim aktivitas manusia. Selain itu, kodok merah juga ditemukan di aliran sungai lambat seperti di Curug Ceret, Curug Cibeureum, Rawa Gayonggong, dan Sungai Jajaway. Selama penelitian berlangsung ditemukan 9 jenis katak yang menempati habitat yang sama dengan kodok merah., The population of bleeding toad (L. cruentata) is considered to continuously decline over the last 40 years. Therefor, monitoring the abundance and quality of the habitat of this species should be done regularly. The purpose of this study was to estimate abundance and identify the microhabitat of bleeding toads and other frogs. This research was conducted in 6 locations in Gunung Gede Pangrango National Park at Resorts Cibodas, Tegallega, and Cisarua using the visual encounter survey method combined with transect sampling. The highest abundance of bleeding toad (L. cruentata) was found in Pariuk waterfall with an abundance per 100 m of 22,7 ± 23,6 ind. Bleeding toads can live in slow and fast flowing rivers. One of them is Pariuk waterfall which has the characteristics of a waterfall with a fast current (50-100 cm/sec), dense canopy cover (61-80%) to very dense (81-100%), and minimal human activity. In addition, bleeding frogs are also found in slow river flows such as Ceret Waterfall, Cibeureum Waterfall, Rawa Gayonggong, and the Jajaway River. During the research, 9 species of frogs were found that occupy the same habitat as the bleeding toad.
Keyword: Kelimpahan, Kodok merah, mikrohabitat, Penurunan populasi

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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