Judul: Perbandingan Kinerja Jaringan Seluler 3G dan 4G pada Protokol Transport TCP dan UDP
Abstrak: Penggunaan komunikasi dan jaringan seluler 3G maupun 4G sangat membantu dalam proses pengiriman data. Penelitian ini akan melakukan analisis kekuatan sinyal dan QoS berdasarkan nilai delay, throughput dan packet loss terhadap perbandingan kinerja jaringan seluler 3G dan 4G pada protokol TCP dan UDP. Pengambilan data terhadap kekuatan sinyal pada sisi klien dan server dengan jaringan seluler 3G dan 4G menghasilkan nilai di atas standar minimum ITU-T terhadap masing-masing teknologi jaringan seluler, namun jaringan seluler 4G memiliki jangkauan nilai yang lebih baik dibandingkan dengan jaringan seluler 3G. Hasil analisis jaringan seluler 4G dengan protokol TCP menghasilkan nilai QoS paling baik diantara jaringan seluler dan protokol yang lain yaitu dengan nilai ratarata delay sebesar 180.313 ms, throughput sebesar 5.546 Mbps dan packet loss sebesar 0.009%. Berdasarkan hasil penilaian TIPHON dan ITU-T menunjukkan bahwa jaringan selular 4G memiliki nilai QoS yang lebih baik dibandingkan dengan jaringan selular 3G.
Keyword: jaringan seluler 3G, jaringan seluler 4G, perbandingan kinerja, transmission control protocol, user datagram protocol

Judul: Kinerja Protokol Routing dalam Komunikasi Real-time pada Jaringan Berkabel
Abstrak: To reach its destination, different routing protocols are used by routers to determine the path for real time data (voice and video) communications. Each protocol has its own method of doing the routing. This research evaluates the performance of three routing protocols, namely RIPv2, EIGRP, and OSPF, based on two parameters: packet loss and router re-convergence time. Test was conducted by using actual devices, i.e., one CISCO 1841 router and eight CISCO 2620XM routers with a small topology. Video file that is used has a duration of 119.25 seconds with video format MPEG-4 and total bit-rate 87.6 Kbps. To obtain the value of packet loss and router re-convergence time, when the stream running about 1 minute, the network will be impaired by turning off one of the router. The analysis was done by looking at the number of packets captured by sniffer and the log of the router. The result shows that protocol EIGRP has the best performance compared with RIPv2 and OSPF with average time 0.148 second to re-convergence and 40 loss packets.
Keyword: 

Judul: Codiaeum Malesia
Abstrak: The Malesian genus Codiaeum has been revised based on the morphological character using available herbarium collections in Herbarium Bogor iense and loan specimens from Rijksherbarium Leiden. The study is based on the observation of 350 specimens. Eleven species have been recognized, namely Codiaeum variegatum, C. luzonicum, C. palawanense, C. trichocalyx, C. megalanthum, C. cilliatum, C. affine, C. tenerifolium dan C. hirsutum, C. macgregorii, C. ludovicianum. number of species is found in the Philippines The highest (8 species), Two species (C. tenerifolium and C. ludovicianum) endemic in Lousiade Archipelago of the New Guinea and C. affine endemic in Banguey Island. C. variegatum is widespread by nature or in cultivation almost in all of Malesian region. C. cillia tum is a species in the earliest level among the other species according to 20 selected characters.
Keyword: Codiaeum, Malesia