Judul: Pengaruh Kekuatan Sinyal terhadap Kinerja Video Streaming pada Jaringan WLAN 802.11b
Abstrak: Along with technological development, many multimedia services on the internet have been developed. One of the services is video streaming. The accessibility is the most advantage of wireless LAN. On the other hand, the Wireless LAN also has problem related to signal strength fluctuation that affect to the quality of streaming video transmitted. The quality of the signal strength has an important role in obtaining a good quality of streaming video. The quality of the signal strength is classified into four categories based on the percentage of received signal on the client side. The categories are Excellent (signal strength > 75%), Good (signal strength 45% - 75%), Fair (signal strength 20% - 45%) and Poor (signal strength < 20%). This research aims to analyze the impact of signal strength degradation to the quality of streaming video on various video bit-rates. The bit-rates are 256 Kbps, 512 Kbps, 768 Kbps and 1024 Kbps. The addition of background traffic is intended to test the streaming service on the busy network. The results showed that video streaming was running well if the signal strength is above 20%. Addition of 5 Mbps network load to the video streaming bit-rate is above 768 Kbps leaded the PLR to the value above 5 %. However the video quality resulted is still acceptable to the human visual system.
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Judul: Pengaruh kekuatan sinyal terhadap kinerja video streaming pada jaringan WLAN 802.11b
Abstrak: Along with technological development, many multimedia services on the internet have been developed. One of the services is video streaming. The accessibility is the most advantage of wireless LAN. On the other hand, the Wireless LAN also has problem related to signal strength fluctuation that affect to the quality of streaming video transmitted. The quality of the signal strength has an important role in obtaining a good quality of streaming video. The quality of the signal strength is classified into four categories based on the percentage of received signal on the client side. The categories are Excellent (signal strength > 75%), Good (signal strength 45% - 75%), Fair (signal strength 20% - 45%) and Poor (signal strength < 20%). This research aims to analyze the impact of signal strength degradation to the quality of streaming video on various video bit-rates. The bit-rates are 256 Kbps, 512 Kbps, 768 Kbps and 1024 Kbps. The addition of background traffic is intended to test the streaming service on the busy network. The results showed that video streaming was running well if the signal strength is above 20%. Addition of 5 Mbps network load to the video streaming bit-rate is above 768 Kbps leaded the PLR to the value above 5 %. However the video quality resulted is still acceptable to the human visual system.
Keyword: ideo streaming, Kekuatan sinyal, Bit-Rate, Bogor Agricultural University, Institut Pertanian Bogor, IPB

Judul: Taksonomi dan variasi morfologi secara geografi pada trachypitkecus auratus (E. Geoffroy, 1812) dan trachypithecus cristatus (Raffles, 1821 (Primates=Cercopithecidae=Colobinae)
Abstrak: Penelitian yang bertujuan untuk mengungkapkan status taksonomi Trachypithecus auratus dan Trachypithecus cristatus dilakukan atas dasar spesimen yang disimpan di dalam koleksi Museum Zoologicum Bogoriense Balitbang Zoologi, LIPI (MZB); Pusat Pengkajian Sumberdaya Alam Sumatra. Jurusan Biologi, Fakultas MIPA, Universitas Andalas (PBC SD dan PBC PT) dan Zoological Reference Collection, National University of Singapore (ZRC). Untuk mengetahui status taksonomi kedua jenis tersebut, materi yang digunakan untuk analisis se-banyak 80 buah spesimen dan dilakukan pengukuran berdasarkan pada 28 variabel tengkorak dan dua variabel tubuh. Menggunakan analisis regresi berganda dapat menerangkan bahwa tujuh macam variabel tengkorak dan dua variabel tubuh tidak dipengaruhi oleh jenis kelamin. Variabel tersebut yaitu panjang dan lebar foramen magnum (FML dan FMW), jarak antara molar 3 (M3-M3), lebar mesopterigoid fosa (MFW), lebar terdekat interorbital (PIW), lebar post orbital (POW), panjang tulang hidung (TH), panjang badan dan panjang ekor. Analisis diskriminan dapat menerangkan bahwa pada populasi Trachypithecus auratus di Jawa dijumpai bentuk variasi klinal yang mengakibatkan di Pulau tersebut hanya dijumpai satu anak jenis yaitu T. auratus auratus. Sebaliknya pada populasi T. cristatus dijumpai ada lima macam bentuk yaitu Thailand, P. Natuna, Bintang, Sumatra-Kalimantan dan Malaya yang merupakan bentuk intermediar antara P. Sumatra-Kalimantan dan Bintang…dst
Keyword: Trachypithecus cristatus, Morphology, Cercopithecidae, Colobinas