Judul: Bioecological of Mud Crabs (Scyllaspp.) in mangrove ekosistem of Subang Regency, West Java
Abstrak: The aim of the research was to collect data and information concerning population structure, reproduction performance, reproduction potency, evaluation of eyestalk ablation and distribution of mud crabs based on the characteristics of their environment habitat. The research was carried out since January 2005 to August 2006. Observation on the morphology and anatomy used descriptive method. The ecological aspect was done in situ using line plot transect method. In the meantime, the aspect of biological reproduction was carried out through a controlled seed experiment in pond and laboratory with treatment of eyestalk ablation. Exploration of eyestalk tissue of mud crabs was performed with the method of histochemistry to assure the success of ablation. The result showed that not only the morphology of different mud crab species but also the morphology and anatomy of crabs with different sexes. The mud crabs from different research stations indicated differences in terms of the population rate. The width of the carapace and minimum and maximum weight of mud crabs caught were different from one species to another.
Keyword: pupulation structure, reproduction performance, reproduction potency, distribution of mud crabs, West Java

Judul: Management of mud crab (Scylla olivacea) at mangrove ecosystem in coastal subdistrict East Sinjai, Sinjai Regency, South Sulawesi.
Abstrak: Sinjai Subdistrict is one of the coastal district area located in Sinjai Regency, South Sulawesi. The region has a fairly extensive mangrove and crab potential of 62,36 tonnes in 2010 for local and export market. The objectives of this research were 1) to identify mangrove ecosystem status in Tongke-tongke and Samataring villanges, 2) to identify bioecological status resource of mud crab (S. olivacea) in the Tonngke-tongke and Samataring villanges, 3) Formulate management strategy of the mud crab to ensure the sustainability of its utilization. The data was collected since February to May 2010. Mud crab’s bioecology status was analyzed using by calculating the growth parameters and prediction of the mortality and exploitation rate of the mud crab using FISAT II software programme. Sustainability analysis was done by using multidimensional scalling approach of Rapfish method. Result of the study show mangrove density both of location was very good, which was between 4.925-9.667 tree/ha. Explotation rate status of the mud crab was exceed the optimum limit but still slight below the allowed of exploitation which was between 0,75-0,81/year. The results obtained for the management of the four dimensions which is value of ecological status that sustainable in management was 50,06% and, while in the value of economic social and institutional dimension status which was less sustainable in management were 49,00%, 30,23% and 40,84%, respectively.
Keyword: 

Judul: berjudul Pelabelan Prima pada Graf Gurita (On) dengan Penambahan Simpul Duplikasi.
Abstrak: Setiap graf gurita adalah graf prima sedemikian sehingga pelabelan simpul pada graf gurita merupakan pelabelan simpul pada graf prima. Suatu Graf ( ( ) ( )) dapat dikatakan memiliki pelabelan simpul pada graf prima jika graf tersebut memenuhi fungsi bijektif ( ) { } dan untuk setiap sisi ( ( ) ( )) . Dalam karya ilmiah ini, akan ditunjukkan bahwa graf gurita memiliki pelabelan prima dan merumuskan graf gurita duplikasi dengan penambahan simpul dari simpul graf kipas ( ) graf gurita ( ), graf bintang ( ) graf gurita ( ), dan simpul utama pada graf gurita ( ) adalah graf prima dengan
Keyword: graf gurita, graf prima, pelabelan prima, penambahan simpul