Judul: Keterkaitan antara Terumbu Karang dan Lamun dengan Sumberdaya Ikan dingkis (Siganus canaliculatus) di Perairan Pulau Abang, Kota Batam
Abstrak: lkan dingkis merupakan ikan yang hidup berasosiasi dengan terumbu karang dan padang lamun. Bagi masyarakat Pulau Abang, ikan dingkis merupakan ikan target dan jadi incaran terutama pada saat perayan Imlek karena harganya cukup tinggi khususnya yang mengandung telur. Eksploitasi yang berlebihan dan penggunaan alat tangkap yang tidak ramah lingkungan mengancam sumberdaya ikan dingkis dan habitatnya., Rabbit fish (Siganus canaliculatus) is an associated fish that live with coral reefs and seagrass. The fish is fishing target for local people and drilled during Lunar Chines New Year Season because of high price particulary its containing eggs. Excessive exploitation of the resources and unfriendly environment threaten the existence of the abundance of the fish. Research objective is to analyze the condition of coral reefs, seagrass and Rabbit fish, where the study can be used as an input of the management of the fish resources. Data was collected in May and June 2009. Transect square method was used to describe the condition of the coral reefs and seagrass and analysis using Image J. The abundance of fish was determined with Under Water Visual Census. Furthermore, food habits was analyzed using the Preponderance Index. Clustering analysis was used by using the Bray Curtis Index and to see their relevance was done using Pearson correlation (r). The results obtained was: (I) The condition of coral cover was poor to moderate category between 21.83% - 64.49%, while for the algae varied between 2,77% - 57.62%, (2) The condition of seagrass cover varied between 1620"10 - 67.90%. Pearson correlation analysis (r). showed that Rabbit fish has a weak relationship but positive with r<0.5 on the seagrass or algae. Management alternatives are: (1) To increase public knowledge in the form of information about the coral reefs and seagrass in . the framework of Rabbit fish resources, (2) Seagrass rehabilitation, (3) catching prohibition at certain times, (4) cultivation activities, (5) involving stakeholders and (6) enhancing the supervision.
Keyword: Terumbu Karang, Ikan dingkis, Siganus canaliculatus, Perairan Pulau Abang, Batam

Judul: Hubungan kondisi terumbu karang dengan keberadaan ikan Chaetodontidae di perairan Pulau Abang, Batam:
Abstrak: Karang dimanfaatkan tidak saja sebagai makanan bagi ikan Chaetodontidae, tetapi juga sebagai tempat tinggal (Harmelin-Vivien & Bouchan-Navaro 1983). Bell & Galzin (1984), Sano et al. (1984), Adrim & Hutomo (1989), Bouchon- Navm dan Bouchon (1989), Edrus & Syam (1998), Zekeria & Videler (2000) menuniukkan bahwa keanekamzarnan dan kelimuahan ikan famili Chaetodontidae meninhat dengan meningkagya tutupan karkg hidup. Penelitian ini penting dilakukan untuk daoat mengetahui mruhan kondisi terumbu karang secara cepat, tepat dan mudah. ^ ~ d a ~t&u j k d ari penelitian ini adalah m~ndeskripsiican kondisi terumbu karang dan ikan Chaetodontidae, menganalisa hubungan antara kondisi terumbu karang dengan ikan Chaetodontidae sebagai dasar menentukan rekomendasi pengelolaan terumbu karang berbasis ekologi. Penelitian dilakukan di perairan Pulau Abang Kecil dan sekitamya pa& Kelurahan Pulau Abang, Kecamatan Galang, Kota Batam. Penelitian ini berlangsung selama 4 (empat) bulan yaitu sejak bulan Mei-Agustus 2009. Pengambilan data terumbu karang dilakukan dengan metode LIT. Pengambilan data ikan Chaetodontidae dilakukan dengan metode UVS. Pengambilan data parameter lingkungan dengan dilakukan &ara in-situ. Analisa isi &rut atau jenis makanan ikan Chaetodontidae dilakukan di Laboratorium EkoBiologi De.pa rtemen Manajemen Sumberdaya Perairan (MSP).
Keyword: terumbu karang, Pulau Abang, Batam

Judul: Simulasi Protokol Autentikasi Pelanggan pada Voice Privacy
Abstrak: Existing design of the telephone public network is susceptible to eavesdropping on its voice stream. Consequently, any wire taper can listen to supposedly private conversation. In order to prevent such eavesdropping, we propose a protocols and its implementation for end-to-end voice privacy authenticate as a service available for interested subscribers. Our protocols consist of customer enrollment system, customer authentication system and simulation voice privacy. Protocols that we made are adaptation from Sharif and Wijekesera journal with the title Providing Voice Privacy as a Service over the Public Telephone Network. The result of the process shows how the customer enrolls and how the system process the password, how the system authenticate customer simulate voice privacy.
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