Judul: Bornean genus hypobathrum (Rubiaceae) an investigation of its characters and taxonomix status
Abstrak: Penelitian karakter-karakter dan status taksonomi marga Hypobathrum di Kalimantan dilakukan dengan mengunakan 140 spesimen di Herbarium Bogoriense. Dari hasil penelitian tersebut disimpulkan bahwa marga Hypobathrum di Kalimantan ada 24 jenis yang terdiri atas: enam jenis yang telah dikenal yaitu: H. jrutescens, H. IOllgifolium, H. microcarpum, H. racemosum, H. salicillllm dan H. venulosllm; tiga jenis kombinasi baru yaitu: H. cOlliocmpum, H gracile dan H. rz!fidulllm; satu jenis kombinasi baru dan status baru yaitu: H. hirtum; satu nama jenis baru yaitu: H. lallcifolillm; dua belas jenis baru yaitu: H. ballglleyellse, H. caudifolium, H. collinllm, H. ellipticifolillm, H. glaberrimum, H. glabrum, H. lithophilllm, H. palllstre, H. rheophyticllm H. riparillm, H. sampitellse dan H. sublllatllm, serta satu jenis yang tidak lengkap.
Keyword: Hypobathrum bangueyense, Hypobathrum

Judul: Revision of Rhynchoglossum (Gesneriaceae) in Malesia
Abstrak: Revision on Rhynchoglossum in Malesia has been done. This research conducted based on morphological characters of 233 sheets of Herbarium specimen and Herbarium specimen photographs from Herbarium Bogoriense (BO), Singapore Botanic Gardens (SING), National Herbarium Netherlands (L), Royal Botanic Garden Kew (K), Natural History Museum London (BM), Royal Botanic Garden Edinburgh (E), New York Botanical Gardens (NY), Smithsonian Institute (US), and Harvard University (A). The result shows that six species are recognized in Malesia and five are endemic. Five species are known previously namely R. borneense, R. klugioides, R. medusothrix, R. obliquum, and R. spumosum; one species is proposed as a new and newly described namely R. celebicum. Rhynchoglossum borneense and R. medusothrix endemic to Borneo, R. celebicum endemic to Sulawesi, while R. spumosum endemic to Philippine Islands. Rhynchoglossum klugioides and R. obliquum distributed wider in Malesia. Rhynchoglossum papuae and R. merrilliae are placed under synonym of R. obliquum and R. spumosum. A phylogenetic analysis using PAUP version 4.0 program based on 60 morphological characters with Stauranthera coerulea and Loxonia hirsuta as an outgroup was undertaken. The analysis resulted a parsimonious tree which shown that Rhynchoglossum in Malesia can be divided in two groups. First clade consist R. obliquum, R. spumosum and R. celebicum while the second clade consist R. klugioides, R. borneense and R. medusothrix. Taxonomic treatment was giving with a identification key to the species, description, nomenclature, distribution, and notes each species.
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Judul: Implementasi Algoritme Enkripsi Advanced Encryption Standard secara Paralel dengan GPU NVIDIA CUDA
Abstrak: Processor streaming architecture in GPU has provide general purpose computation which have its own potential to help CPU with its parallel computation capability. One example of supported processor streaming architecture is Fermi which is developed by NVIDIA. Furthermore, NVIDIA has developed its own software development kit namely CUDA, which can integrate many popular existing programming languanges such as C++ for GPU-based parallel computation. This research focus on the implementation of parallel AES algorithm with GPU and analyze the performance result of the implementation in two different NVIDIA devices, namely NVIDIA GeForce GT220 and NVIDIA Quadro 600. In general, the performance of parallel GPU computation is better than sequential computation for large data input. It is obtained that the maximum speedup of NVIDIA GeForce GT220 in 8 MB input is 89.3 with 180% efficiency. Higher speedup of 101.6 can be obtained by NVIDIA Quadro 600 with the same input size with around 100% efficiency.
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