Judul: Peningkatan Kualitas Layanan Website IPB Menggunakan Load Balancing dan Mirorring
Abstrak: Bogor Agricultural University (IPB) uses website as media to promote all of it's activities and events to the academic community and world wide. Currently, IPB website using a single server to serve requests from the user. The use of a single server is not powerful enough to serve huge request at the same time, This research implements load balancing and mirroring mechanism to distribute workload to some server ofIPB website. Load balancing method implemented was dedicated load balancing at IP level used L VS software with Network Address Translation distribution method. Implementation was build in virtual network used VMWare virtual machine to solve the hardware limitation and to reduce risk. Mirroring method used was mixed of time base and event base mirroring. File synchronization used time base mirroring, whereas database synchronization used event base mirroring. The result of this research showed that the implementation of load balancing and mirroring mechanism has been proven in upgrading the web server reliability, scalability, and availability. Goodput of LVS was better than single server system. Response time and request loss L VS were lower than single server. In L VS system, CPU and memory utilization on both of web server were almost equal. It indicated that the director distributed workload to web servers fairly. Duration of take over director was less than 2 second that still achieved Cisco standard in RFC 2281, the recommended time of take over director was not be more than 10 second. On the other hand, the duration of take over web server was approximately 21 second.
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Judul: Permormance analysis of web server load balancing with dynamic ratio algorithm
Abstrak: Seiring dengan meningkatnya kebutuhan akan penggunaan sumber daya yang ada di dalam jaringan komputer, teknologi jaringan juga semakin berkembang. Load balancing merupakan salah satu teknik routing yang dapat memanfaatkan beberapa sumber daya untuk dapat digunakan secara bersamaan. Ketika permintaan dari pengguna meningkat maka server akan terbebani karena harus melayani permintaan tersebut. Tujuan dari penelitian ini adalah membangun load balancer yang dapat membaca ketersediaan resource pada server. Pembagian request dilakukan dengan mempertimbangkan informasi resource sever tersebut, yang terdiri dari CPU, memory, dan disk. Algoritme penjadwalan yang digunakan adalah rasio dinamis dan sebagai algoritme pembandingnya adalah round robin. Hasil penelitian menunjukkan bahwa algoritme rasio dinamis bekerja lebih optimal dibandingkan dengan algoritme round robin. Algoritme rasio dinamis mampu meningkatkan throughput, meminimalkan waktu tanggap, dan menghindari overload., The increasing demand of the computer network resources usages has triggered the development of networks technology. Load balancing is one of the routing technique that can utilize multiple resources simultaneously. When the requests from the users increase, the server will be burdened for giving response to that requests. The purpose of this research is to build a load balancer that can read the servers’ resource availabilities. Based on these information, the requests distribution is performed by considering the resources such as CPU, memory, and disk. Dynamic ratio is used as the schedulling algorithm and compared with round robin algorihtm. The results will be compared to the one of round robin algorithm. The results showed that the dynamic ratio algorithm works more optimal than round-robin algorithm. Dynamic ratio algorithm is able to improve the throughput, minimize the response time, and avoid overload.
Keyword: load balancing, rasio dinamis, round robin, server

Judul: Posisi Filogenetik Kura-Kura Carettochelys Insculpta  (Reptillia: Testudinata)
Abstrak: Carettochelys insculpta is an endemic freshwater turtle of southern Papua and northern Australia. Phylogenetic position of this turtle is remain unresolved until now. Most of the research conducted show close relationships of C. insculpta and members of Trionychidae family. However, some of the research show distance between C. insculpta and members of Trionychidae family. This research is conducted to analyze phylogenetic relationship between C. insculpta and other members of Testudinata using 12S rRNA, 16S rRNA, and both gene as markers. DNA samples were obtained from three different organisms of C. insculpta. Two species used as outgroups were Alligator mississippiensis and Iguana iguana. Phylogenetic analysis was carried out using Neighbor-Joining method with Felsenstein 1981 (F81) modeltest. A polytomy tree of Testudinata was produced by using 12S rRNA gene. However, analysis using 16S rRNA and both genes as markers confirmed that C. insculpta was located between the Chelonidae and the Trionychidae family.
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