Judul: Modifikasi krendet bertingkat pengaruhnya terhadap hasil tangkapan krustasea di Teluk Palabuhanratu
Abstrak: Umumnya krendet digunakan untuk menangkap krustasea dan dibuat dengan konstruksi sederhana tanpa pelindung dari predator. Hal tersebut diduga menyebabkan meningkatnya mortalitas krustasea yang tertangkap akibat dimangsa oleh predator. Solusi yang dapat dilakukan adalah merancang perangkap krendet dengan konstruksi bertingkat dengan dinding pelindung. Hipotesis dalam penelitian ini adalah penggunaan perangkap krendet bertingkat akan meningkatkan hasil tangkapan krustasea. Penelitian ini bertujuan untuk membuat rancang bangun perangkap krendet bertingkat sebagai perlakuan, membandingkan komposisi hasil tangkapan krustasea pada perangkap krendet penelitian, menentukan pengaruh penggunaan krendet bertingkat terhadap hasil tangkapan krustasea, dan menentukan produktivitas dan pendapatan nelayan krendet selama penelitian. Penelitian dilaksanakan di Teluk Palabuhanratu secara experimental fishing selama 18 trip dengan menggunakan 5 unit krendet pada masing-masing perlakuan (bertingkat dan tradisional). Hasil penelitian menunjukkan bahwa krendet bertingkat mendapatkan krustasea sebesar 14,70 kg, sedangkan krendet tradisional sebesar 10,98 kg. Konstruksi bagian atas krendet bertingkat memiliki pengaruh dalam meningkatkan hasil tangkapan sebesar 31,79%. Krendet bertingkat memberikan pengaruh nyata terhadap jumlah ekor dan berat hasil tangkapan. Produktivitas krendet bertingkat lebih besar dibandingkan tradisional, yaitu masing-masing sebesar 0,82 kg/trip dan 0,61 kg/trip dengan kenaikan persentase rata-rata produksi krendet bertingkat sebesar 33,86%. Hal yang sama terdapat pada pendapatan bersih krendet, dimana pendapatan pada krendet bertingkat dua kali lebih besar dibandingkan krendet tradisional., Generally, krendet is used to catch crustaceans. This is thought to lead to increased mortality of crustaceans caught as a result of being preyed upon by predators. The solution that can be done is to design a krendet trap with multilevel construction with a protective wall. The hypothesis in this study was that the use of multilevel krendet traps would increase crustacean catches. This study aims to design and build stratified krendet traps as a treatment, compare the composition of crustacean catches in research krendet traps, determine the effect of using multilevel krendets on crustacean catches, and determine the productivity and krendet fisherman income during research. This research is held at Palabuhanratu Bay by experimental fishing for 18 trips using 5 krendet units for each treatment (multilevel and traditional). The result showed that multilevel krendet get 14.70 kg of crustaceans, while the traditional get 10.98 kg. The construction of the top krendet trap with multilevel construction influences increasing catches by 31.79%. The multilevel krendet had a significant effect on the number of tails and the weight of the catch. The productivity of the multilevel krendet was greater than that of the traditional, namely 0.82 kg/trip and 0.61 kg/trip with an average increase in the percentage of multilevel krendet production by 33.86%. The same thing is found in the net income of krendet, where the income of the multilevel krendet is two times larger than traditional krendet.
Keyword: crustacea, modification, multilevel krendet, Palabuhanratu Bay, trap

Judul: The Use of Trash Fish Diluted with Squid (Loligo spp.) Bait on Bottom Gillnet in Palabuhanratu Bay
Abstrak: Perikanan jaring rampus saat ini belum mengalami banyak kemajuan dan hasil tangkapannya yang tidak selalu meningkat. Penelitian ini bertujuan untuk membandingkan komposisi hasil tangkapan jaring rampus berumpan ikan rucah yang dilarutkan cumi dengan jaring rampus tanpa umpan, menentukan pengaruh penggunaan umpan, dan menentukan produktivitas jaring rampus perlakuan dan kontrol. Penelitian dilakukan di Teluk Palabuhanratu, Kabupaten Sukabumi, menggunakan metode eksperimental fishing dengan mengikuti operasi penangkapan selama 16 trip. Hasil tangkapan pada piece jaring rampus perlakuan sebesar 69,83 kg dan piece kontrol sebesar 42,93 kg dengan rata-rata jumlah jenis ikan pada piece perlakuan yaitu 8  0,47 sedangkan kontrol yaitu 7  0,45. Hasil tangkapan dominan pada penelitian ini adalah swanggi (Priacanthus tayenus), gulamah (Johnius trachycephalus), layang anggur (Decapterus kurroides), selar bentong (Selar crumenophthalmus), dan kakap (Lates calcarifer). Perlakuan menggunakan umpan ikan rucah yang dilarutkan cumi memberikan pengaruh nyata terhadap berat total dan jumlah ekor hasil tangkapan. Penggunaan umpan membantu kenaikan persentase produktivitas piece jaring rampus perlakuan sebesar 62,7% dengan produktivitas per-piece perlakuan lebih besar dibandingkan kontrol dengan masing-masing nilainya sebesar 1,09 kg/piece dan 0,67 kg/piece dan untuk nilai produktivitas satu piece perlakuan yaitu Rp19.181,00 sedangkan kontrol yaitu Rp6946,00 sehingga didapatkan persentase produktivitas hasil tangkapan piece perlakuan terhadap piece kontrol sebesar 176,1%., Currently, bottom gillnet fishing has not made much development, and its catches are not always increasing. This study aimed to compare the composition of the catch bottom gillnet with trash fish diluted squid bait and without bait, determine the effect of bait use, and determine the productivity of treatment and control bottom gillnet. The research was conducted in Palabuhanratu Bay, Sukabumi Regency, using experimental fishing methods by following fishing operations for 16 trips. The catch on the treated piece was 69,83 kg, and the control piece was 42,93 kg, with the average number of fish species in the treated piece was 8  0,47 while the control was 7  0,45. The dominant catches in this study were bigeye bullseye (Priacanthus tayenus), leaf tail croaker (Johnius trachycephalus), redtail scad (Decapterus kurroides), bigeye scad (Selar crumenophthalmus), and snapper (Lates calcarifer). Trash fish diluted squid bait significantly affected the total weight and number of fish caught. The use of bait helped to increase the percentage of productivity of treated net pieces by 62,7%, with productivity per treated piece more significant than the control with a value of 1,09 kg/piece and 0,67 kg/piece. The productivity value of one piece of treated was Rp19.181,00 while the control was Rp6946,00, so the percentage of productivity of the treated piece catch against the control piece was 176,1%.
Keyword: bait attractor, bottom gillnet, Palabuhanratu Bay, squid, trash fish

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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