Judul: Pengaruh Video Bit-rate dan Background Traffic terhadap Kinerja Video Streaming pada Jaringan Wireless LAN
Abstrak: Perkembangan teknologi streaming semakin meningkat seiring dengan pemenuhan quality of service (QoS) layanannya. QoS pada aplikasi video streaming menyangkut dalam hal kualitas video dan media transmisi. Penggunaan media wireless sebagai media transmisi membuat pengaksesan ke jaringan menjadi lebih fleksibel. Tujuan penelitian ini adalah untuk mengevaluasi pengaruh kualitas video dengan parameter video bit-rate dan background traffic terhadap kualitas video streaming pada jaringan wireless LAN.
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Judul: Pengaruh Mobilitas terhadap Kinerja Video Streaming pada Wireless LAN
Abstrak: The development of streaming teclmology has been increasing in line with the quality of service (QoS). QoS in video streaming applications were influenced by the quality of video and media transmission. Even though wireless network provides more flexibility than wired network, it limited to reliability and transfer rate. This thesis presents an experimental measurements ofMPEG-4 H.264 media streaming performance in an IEEE 802.l1g WLAN environment. The streaming server used in this research is Darwin Streaming Server (DSS), an open source version of the Quicktime Streaming Server (QSS). The mechanism for video streaming is implemented in Video-an-Demand (VoD). This experiment was conducted in the WLAN environment with scenarios withoutnaz client mobility and with client mobility. The videos used were in H.264 format with the bit-rate of 256 Kbps, 512 Kbps, 768 Kbps and 1024 Kbps. Media player used in client-side was the Quicktime Player that supports RTP streaming protocols. The data capturing were performed on the client side. The parameters to be analyzed were the total RTP packet video, total video RTP packet received, sequence errors, packet loss, and delay.
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Judul: Systematics of Desmos (Annonaceae) in Malesia
Abstrak: Desmos is a woody climbing genus of Annonaceae which has been widely used as traditional medicine in several countries such as China, Indo-China, Thailand, and Peninsular Malaysia to treat dysentery, vertigo, fever, and postpartum. Phylogenetic studies on Desmos showed a close relationship between Desmos and Dasymaschalon. They share similar moniliform monocarpic fruits, but their flowers are different. It has been debated among Annonaceae researchers whether both genera should be treated as the same or distinct genus. Therefore, investigation on the taxonomic delimitation of Desmos species and Dasymaschalon will be necessary. Plastid genome (plastome) identification, leaf epidermal section of Desmos species and Dasymaschalon species, a taxonomic revision of Desmos in Malesia using morphological data, the spatial distribution of Desmos species in Malesia, and morphological and genetic variation in Desmos chinensis population using ISSR marker were used to investigate taxonomic delimitation of Desmos. Plastome study of Desmos chinensis and Dasymaschalon dasymaschalum was carried out to determine the origin, evolution, phylogenomics, and identify marker candidates for Desmos and Dasymaschalon or with other genera in Annonaceae. We discovered that the plastome of Desmos chinensis was circular with the size of 167,677 bp (smaller than Dasymaschalon dasymaschalum), consist of 111 genes, including 78 protein-coding genes, 29 transfer RNAs, and 4 ribosomal RNAs. The plastome showed a typical quadripartite structure, i.e., large single copy (LSC), small single copy (SSC), and two inverted repeats (IRs). The plastome of Dasymaschalon dasymaschalum was 191,488 bp in length, which also exhibited a typical quadripartite structure (LSC, SSC, and two IRs). Desmos chinensis and Dasymaschalon dasymaschalum showed different copies of accD, ndhD, ndhF, rps18, and ycf2. Protein coding genes of rpoB, rpoC1, rbcL, matK, rpl32, infA, and rpl36 were identified based on nucleotide diversity, sequence variability, and parsimony-informative sites. The genes are defined as molecular marker candidates of plastome for phylogenetic, barcoding, and population genetic research. We predicted that Desmos chinensis and Dasymaschalon dasymaschalum separated at ca. 64 million years ago during the Paleocene. Leaf anatomical feature study was carried to support the taxonomic delimitation of interspecific Desmos and intergeneric of Desmos and Dasymaschalon. Leaf anatomy in the paradermal section of 20 taxa (12 species of Desmos, eight species of Dasymaschalon) have been carried out. According to the leaf epidermal section, Desmos and Dasymaschalon are two distinct genera mainly distinguished based on the anticlinal wall undulation of epidermal cells and supported by variation of the crystal type and size. The anticlinal wall undulation of Desmos was almost straight to slightly wavy and never sinuous; meanwhile, Dasymaschalon varies from almost straight to deeply sinusoid. The crystals of Desmos consist of rhombohedral, druse type A, and druse type B crystals, whereas Dasymaschalon has prism, druse type A, druse type B, and druse type C crystals. The recent taxonomic revision using the morphological data was mainly based on the examination of about 1374 specimens from BO, L, WAN, ANDA, SING, SAN, K, P, HUH herbaria. The Desmos species in Malesia consists of eight species: D. acutus, D. chinensis, D. chryseus, D. dunalii, D. pedunculosus, D. subbiglandulosus, two new records: D. lawii and D. macrocarpus, and one
Keyword: Dasymaschalon, Desmoid clade, Magnoliid, plastid genome, phylogenomics analysis