Judul: Visual Acuity of Yellowtail (Caesio cuning) and it’s Implementation to Basket Trap Fisheries in Seribu Islands Waters
Abstrak: Penangkapan ekor kuning dengan bubu dilakukan oleh nelayan tanpa memperhatikan ukuran ikan yang ditangkap. Hal tersebut menjadi salah satu penyebab turunnya jumlah populasi ikan dan mengancam kelestariannya. Penelitian ini bertujuan untuk mengetahui morfologi dan fungsi penglihatan, menentukan arah penglihatan (visual axis) dan ketajaman penglihatan (visual acuity) pada ekor kuning (Caesio cuning). Hasil penelitian ini dapat digunakan untuk memahami proses adaptasi penglihatan ekor kuning terhadap lingkungannya dan juga alat tangkap, serta sebagai informasi penting dalam memperbaiki metode penangkapan sehingga ramah lingkungan. Hasil penelitian mengungkapkan bahwa susunan sel reseptor pada ekor kuning membentuk mozaik. Nilai indeks ketajaman penglihatan ekor kuning dengan ukuran panjang total tubuh 250-290 mm berkisar 0,135-0,149. Kepadatan sel kon tertinggi dari retina mata ikan ekor kuning berada di bagian ventro-temporal dan arah penglihatan ke arah depan naik pada sudut 40º. Berdasarkan hasil perhitungan diketahui jarak pandang maksimum ekor kuning dalam melihat objek (umpan) dengan diameter 20 mm pada perairan yang jernih berkisar 9,2-10,3 m, untuk objek berdiameter 25 mm 11,6-12,9 m, dan untuk objek berukuran 30 mm berkisar 13,9-15,5 m., The yellowtail fishing with basket traps continues to be carried out by fishers regardless the fish size caught. This condition can have an impact on decreasing fish population and then threatens their sustainability. This study was conducted to know about the morphology and visual function of yellowtail (Caesio cuning) in adapting to its habitat, to determine the visual axis, and visual acuity of yellowtail fish that can be used to improve fishing methods so that it meets the environmentally friendly criteria. The results showed the arrangement of receptor cells in yellowtail eye’s retina forming a mosaic arrangement. The visual acuity index of yellowtail ranged 0,135-0,149 for total body length of 250- 290 mm. The yellowtail fish had the highest cone cells density in the ventro- temporal of the eye’s retina and the direction of vision towards the upper fore at an angle of 40º. The estimated maximum sighting distance of yellowtail to see the object (bait) of 20 mm diameter ranged 9,2-10,3 mm, 11,6-12,9 mm for the bait of 25 mm, and 13,9-15,5 mm for the bait of 30 mm.
Keyword: cone cells, maximum sighting, morphology, retina, visual acuity, yellowtail

Judul: Ketajaman Penglihatan Sidat (Anguilla sp.) dan Penerapannya pada Proses Penangkapan
Abstrak: Sidat (Anguilla sp.) termasuk ikan nokturnal yang aktif mencari makan pada malam hari. Respon penglihatan, khususnya ketajaman penglihatan sidat menjadi penting dalam pengembangan metode dan teknologi penangkapan ikan. Penelitian ini bertujuan untuk mengukur ketajaman penglihatan, dan menentukan sumbu penglihatan ikan sidat, serta menghitung jarak pandang maksimum sidat terhadap umpan. Kemampuan penglihatan sidat dianalisis secara fisiologi melalui serangkaian proses histologi. Berdasarkan hasil analisis histologi yang dilakukan terhadap sidat sampel, diperoleh bahwa susunan sel reseptor seperti pada umumnya ikan membentuk mozaik, yang tersusun oleh sel kon tunggal (single cone cell) dan sel kon ganda (twin cone cell). Kepadatan sel kon tertinggi terletak pada bagian ventro-temporal retina sidat. Hal ini menunjukkan bahwa penglihatan sidat ke arah depan-naik (upper-fore). Indeks ketajaman penglihatan sidat berkisar 0,04-0,09 untuk panjang total ikan 350-630 mm. Jarak pandang maksimum sidat dalam melihat objek berukuran 10 mm berkisar 1,38-3,05 m untuk panjang tubuh ikan 350-630 mm., Eels (Anguilla sp.) are nocturnal species that actively forages at night. The visual response, especially visual acuity of eels is crucial for the development of fishing methods and technology. This study aims to measure visual acuity, determine the visual axis, and calculate the maximum sighting distance of eels toward the bait. The visual acuity of eels was physiologically analyzed through a series of histological processes. Based on the results of the histological analysis of the eel eye samples, it was found that the structure of the receptor cells in the eel’s eye retina formed a mosaic, consisting of single and twin cone cells. The highest density of cone cells in eels was located in the ventro-temporal part of the retina, indicating that the eel’s vision is oriented toward the upper-front direction. The visual acuity of eels ranged from 0,04 to 0,09 for a fish with a total length of 350-630 mm. The maximum sighting distance of eels to detect a 10 mm diameter object ranged from 1,38 to 3,05 m for a body length of 350-630 mm.
Keyword: jarak pandang maksimum, kepadatan sel kon, ketajaman penglihatan, sidat, sumbu penglihatan

Judul: Pengembangan distribusi ILOS multimedia (ILOSmedia)
Abstrak: The development of open source softwares is still going rapidly nowadays, including open source operating systems for desktop computer, netbook, tablet PC, and smartphone. The open source operating systems have considerable contribution to open source software. Linux is an open source operating system that continues to grow since 1991. The characteristics in general Linux are free, can be distributed freely, and free to make changes in it. Linux in its development is divided into several distributions. Each distribution is made as a specific goal so that the operating system can focus on running the desired functions, such as multimedia, networking, education, etc. The objective of of this research is to develop and evaluate the ILOS distribution for multimedia by providing multimedia of open source packages. ILOSmedia uses Ubuntu10.10 and Remastersys as a tool to remaster. ILOSmedia is developed by installing multimedia packages that have been obtained based on the results of questionnaires from 30 respondents from three communities, which are KPLI Bogor, Linux.com forums, and Kaskus.us forums. ILOSmedia also uses the Realtime kernel as kernal Mutimedia. ILOSmedia testing is performed by 11 students of Computer Science who are members of FOKERZ community. The testing process is performed by executing ILOSmedia via live-cd and filled in a questionnaire. The test result shows that ILOSmedia has hardware compatibility on notebook and PC with good performance. As much as 72.727% of respondents believe that the size of the installer ILOSmedia of 1.34 GB and a minimum 10GB hard drive is normal. ILOSmedia has multimedia packages complete with the percentage completeness according to respondents is 45.455% are very complete and 54.545% are complete. Boot speed ILOSmedia have an average of 28.87 seconds and 90.91% of respondents consider that ILOSmedia have a desktop environment that is easy navigation
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