Judul: Effect of Multi-Streaming on SCTP to Mobile Ad Hoc Network (MANET) Performance.
Abstrak: Stream Control Transmission Protocol (SCTP) is a connection-oriented transport layer protocol that provides reliable data transfer service an Internet Protocol (IP) network. The two main features of SCTP are multi-streaming and multi-homing. Multi-streaming allows multiple streams to send data; if one stream fails, only part of the data is lost and needs to be resent. Multi-homing is a feature that allows for multiple IP addresses at one endpoint to ensure that failures don’t bring the transmission to a total halt. This research performed on Network Simulator (NS-2) to analyze multi-streaming effect in Mobile Ad Hoc Network (MANET). Mobile ad hoc networks were formed dynamically by an autonomous system of mobile nodes that were connected via wireless links in absensce of network infrastructure or centralized administration. The metrics which evaluted in this simulation were throughput, delay, and packet loss ratio. As a result, maximum stream number was different according to the receiver window size. If receiver buffer size was small, head-of-line blocking would be more severe, so the link needed an additional number of streams. If the receiver had enough buffer size to store many packets while waiting on a lost packet, it did not need additional streams. SCTP quality was good enough because the delay we got less than 4 seconds. For getting good streaming quality, the delay has to less than 4 or 5 seconds. Keywords : SCTP, MANET, multi-streaming, multi-homing, ad hoc, head-of-line blocking, receiver window.
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Judul: Pengaruh Multi-streaming dan Congestion Window pada SCTP terhadap Kinerja Mobile Ad Hoc Network (MANET)
Abstrak: Stream Control Transmission Protocol (SCTP) is a connection-oriented transport layer protocol that provides reliable data transfer service an Internet Protocol (IP) network. The two main features of SCTP are multi-streaming and multi-homing. Multi-streaming allows multiple streams to send data; if one stream fails, only part of the data is lost and needs to be resent. Multi-homing is a feature that allows multiple IP addresses at one endpoint to ensure that failures do not bring the transmission to a total halt. This research was performed using Network Simulator (NS-2) to analyze multi-streaming and congestion window effect in Mobile Ad Hoc Network (MANET). Mobile ad hoc networks were formed dynamically by an autonomous system of mobile nodes that were connected via wireless links in absensce of network infrastructure or centralized administration. The metrics which evaluated in this simulation were throughput, delay, and packet loss ratio. As a result, delay value is reduced only when the addition of congestion window up to 2 * MTU. Increasing the above 2 * MTU will actually add value to the delay. SCTP quality was good enough for delay-sensitive application, because the delay was less than 4 seconds.
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Judul: Peranan aktivitas enzim B-glukosidase pada pembentukan komponen flavor panili selama proses kuring
Abstrak: Vanillin adalah salah satu flavor yang paling banyak digunakan di dunia. Flavor panili dihasilkan dari proses kuring dimana terjadi berbagai perubahan biokimiawi. Panili alami Indonesia dikenal memiliki kualitas yang lebih rendah dibandingkan panili Bourbon karena dipetij muda dan proses kuring kurang sempurna.
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