Judul: Keterkaitan antara terumbu karang dengan ikan chaetodontidae: implikasi untuk pengelolaan
Abstrak: This study was aimed to explore the relationship between fish Chaetodontidae with the percentage of live coral cover as pre reguisite for appropriate management. The research was conducted Sidodadi waters and Tegal island Province of Lampung in during April to Juni 2010 at 6 stations. Data for coral reef was collected using visual census fish and line intercept transect method which placed parallel to the coastline. The results recorded 115 species of fish Chaetodontidae, representing 2 Genera, namely Chaetdon (91 species), and Chelmon (24 species). The variety of the diversity index, could be an indicator of the quality of coral reefs which ranging from 0,28 to 1,38 and the coral cover between 47.94% to 67.14%. The correlation between the percentage of live coral and fish Chaetodontidae were positive, where the coefficient of determinant (r) of each species more than 80,20 %. Analysis of fish feeding habit Chaetodontidae favorite show that the coral life is very high, in additional all species analyzed zooxanthelae presence of very high compared with plankton, detritus, and algae plankton. Therefore the fish Chaetodontidae highly dependent on living coral as its main food.
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Judul: EFFECT OF SEDIMENTATION RATES AND CARNIVOROUS FISHES ON FOOD & HABITAT PREFERENCES OF CORALLIVOROUS FISH (CHAETODON OCTOFASCIATUS) IN THE SERIBU ISLANDS
Abstrak: Sedimentation rates are a major stress factor for coral reefs. It also impacts the feeding behavior and habitat of corallivorous fishes. The presence of carnivorous fishes may also influence the feeding behavior of corallivorous fishes. This study aimed to assess the relationship between Chaetodon octofasciatus and hard coral (HC) cover. In addition, sedimentation rates and predator abundance were assessed as potential influence. Data were collected at 4 different sites in the Seribu Islands north of Jakarta/Indonesia, including the abundance of Chaetodontidae and carnivorous fishes, Chaetodon octofasciatus behavior, coral reef cover, and sedimentation rates. The abundance of fishes was assessed using 50-m length belt transects deployed at 3-m depth. Coral reef cover was assessed using the Point Intercept Transect (PIT) method with 100 points for each transect. Data on fish behavior was recorded using the Focal Animal method to assess feeding rates and prey selectivity. 10 sediment traps were mounted at each site and collected after 30 days of deployment to obtain sediment samples, which were analyzed for sediment dry weight, ash-free dry weight, and organic content in the laboratory. The study results showed that the condition of coral reefs at Panjang, Belanda, and Pelangi is currently fair in terms of hard coral cover (HC<50%), while Kelapa had poor reef conditions (HC<25%). The abundance of C. octofasciatus had a high relationship with HC cover and showed a weak relationship with predators. Sedimentation rates had the strongest relationship with the feeding rates of C. octofasciatus compared with predators and HC cover.
Keyword: Chaetodon octofasciatus, Terumbu karang, Sedimentasi, Kepulauan Seribu, Laju pemangsaan, Ikan terumbu, Ikan predator, Ikan Kupu-kupu, Butterflyfish, Coral reef, Sedimentation, Reef fishes, Predator fishes, Feeding rates

Judul: Formulasi TSP (Traveling Salesman Problem) menggunakan ILP (Integer Linear Programming)
Abstrak: TSP is a journey of salesman f?om his origin town (place) to visit n-cities (places) only at once, then return to his origin town (place) with a minimum total distance. Its purpose is to minimize the operating expense that is released by the company. Vehicle route at TSP in the form of a Hamiltonian cycle, that is closed path containing all nodes at the graph which representing a network walk. Its problem is to determine a journey route which is feasible (possibly can be passed by) in such a way the vehicle travelled distance passed the route is minimum.
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