Judul: Biologi Reproduksi Undur-undur laut Emerita emeritus Di Kecamatan Buluspesantren Kabupaten Kebumen, Jawa Tengah
Abstrak: Mole crab is well known as one of fisheries resources in Kebumen which has the potential to use. This research aimed to measure aspect of biology reproduction such as sex ratio, fecundity, classification and development egg, and alternative of management plan for fisheries. The research was conducted at sandy beach in Subdistric of Buluspesantren Distric of Kebumen, Central Java in the period of October 2012 until February 2013. The result of sex ratio is unbalanced with average of 98.73% for female and 1.17% for male. Total number of mole crab that taken during the research was 1243 individuals. The relationship of fecundity and lenght carapas was estimated F= 150.32CL – 3044.6 with number of coefficient (R2) is 42.53%. Fecundity of lenght carapas in stages also had a little number of coefficient. Result of egg diameter of mole crab show that the type of reproductive is total spawner. Size of egg diameter had a increased number. The alternative of management plan for mole crab resources in Kebumen is selectifity of catch
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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: Cycle Hamilton pada Graf Lengkap, Graf Regular, dan Graf 2-Connected 4-Regular Berorder Kurang dari Sepuluh
Abstrak: Suatu graf disebut graf Hamilton apabila graf tersebut memuat cycle Hamilton, yaitu cycle yang melewati setiap vertex tepat satu kali. Menentukan keberadaan cycle Hamilton pada suatu graf dapat menggunakan syarat cukup yang berupa teorema-teorema yang telah diperkenalkan sejak tahun 1950-an. Beberapa syarat cukup yang dibahas dalam karya ilmiah ini adalah syarat cukup yang berhubungan dengan graf lengkap dan graf regular. Suatu graf lengkap berorder 𝑛������ ≥ 3 dan graf r-regular berorder 𝑛������ ≤ 2𝑟������ + 1 merupakan graf Hamilton, Karena kedua graf tersebut memuat cycle Hamilton. Selanjutnya, syarat cukup tersebut digunakan untuk menentukan keberadaan cycle Hamilton pada graf 2-connected 4- regular berorder kurang dari 10.
Keyword: graf Hamilton, graf regular, graf lengkap, graf 2-connected 4-regular