Judul: Studi teknologi streaming audio format MP3 pada radio internet
Abstrak: eranan media radio masih sangat penting dalam penyampaian informasi clan sarana hiburan. Penelitian ini membahas teknologi streaming audio dalam fmnat MP3 dan mengimplementasikannya pada sistem radio internet. Teknologi streaming audio memungkinkan pengiriman siaran dapat dilakukan secara kontinu melalui internet, sehingga teknologi ini merupakan dasar dari radio internet. MP3 merupakan standar format Wltuk komprcsi dan transmisi audio digital yang banyJk digwiakan di internet. Sistem radio internet terdiri dari 3 komponen utama, yaitu encoder, streaming server dan streaming player. Encoder berfungsi mengkonversi input siaran ke dalam fonnat streaming audio. Sedangkan streaming server berfungsi sebagai repeater yang mengirimkan streaming audio tersebut ke streaming player. Ketiga komponen ini bekerja secara real time Wltuk menghasilkan siaran radio internet. Bandwidth mcrupakan persoalan ydilg harus diperhatikan dalam sistem radio internet karena berhubungan dengan biaya dan kualitas suara. Hasil evaluasi sistem radio internet menujukkan bahwa untuk aspek reliability, efficiency dan kualitas suara sangat tergantung dengan infrastruktur jaringan internet dan ketersediaan bandwidth. Sistem radio internet Lesmana FM Bogor dapat lebih dikembang,kan dcngan fasilita.s y,mg interaktif untuk user/pcndengar dan penggunaan bandwidth pendengar dibawah 24 kbps serta bandwidth streaming server lebih dari 2,4 Mbps, sehingga dapat menghasilkan kualitas suara yang lebih bagus.
Keyword: 

Judul: Analisis Pengaruh Algoritme Encoding dan Spesifikasi Audio Terhadap Kinerja Audio Streaming pada Jaringan Mobile Internet CDMA
Abstrak: Kini teknologi jaringan telekomunikasi dan internet telah berkembang sangat pesat. Code division multiple access (CDMA) merupakan teknologi jaringan telekomunikasi berkecepatan tinggi hingga 3.1 Mbps yang memungkinkan pengguna layanan untuk melakukan kegiatan multimedia streaming khususnya layanan audio streaming. Spesifikasi dan jenis algoritme encoding yang digunakan pada file audio dapat berpotensi memiliki pengaruh terhadap kelancaran proses streaming itu sendiri. Penelitian ini bertujuan untuk membangun sistem audio streaming melalui jaringan internet dan melakukan analisis pada kualitas hasil audio streaming berdasarkan algoritme encoding serta spesifikasi audio yang digunakan sesuai dengan standar quality of service (QoS). Percobaan yang dilakukan terdiri atas 4 skenario pergerakan dengan besar kecepatan, bit-rate, dan tipe encoding yang bervariasi. Kecepatan, bit-rate, dan encoding yang digunakan masing-masing adalah 0-60 km/jam, 32-320 kbps, dan AAC, MP3, serta WMA. Hasil dari analisis menunjukkan bahwa hasil terbaik diperoleh pada skenario 4 apabila file audio streaming tersebut menggunakan encoding MP3 dengan bit-rate 320 kbps. Jika demikian maka pengguna akan mendapatkan layanan audio streaming yang baik sesuai dengan QoS.
Keyword: audio streaming, CDMA, quality of service

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