Judul: Sistem informasi ragam diferensiasi seks ikan berbasis web
Abstrak: Informasi merupakan hal yang banyak dibutuhkan dan merupakan prasyarat serta inti penting yang dibutuhkan oleh akuakultur bahkan pada tingkat pengelolaan yang tradisional. Pada keadaan tersebut perkembangan baru teknologi informasi menjadi salah satu hal penting dalam perkembangan akuakultur. Penyediaan informasi akuakultur yang selalu siap tersedia tanpa dibatasi oleh faktor ruang dan waktu diharapkan dapat meningkatkan laju perkembangan bidang akuakultur Indonesia. Informasi ragam diferensiasi seks ikan merupakan hal yang menarik untuk diungkapkan karena dengan habitat hidup yang berbeda-beda menyebabkan ragam diferensiasi dari spesies yang ada. Kegunaan informasi ini tidak hanya untuk kegiatan budidaya tetapi dapat juga untuk mendukung kebutuhan dasar penelitian yng terkait dengan pemeliharaan, pengontrolan atau penggunaan spesies ikan yang memiliki jenis kelamin berbeda. Materi yang digunakan didapatkan melalui penghimpunan berbagai informasi pustaka baik yang bersifat teoritis maupun aplikasi. Berdasarkan hasil tersebut kemudian dilakukan perpaduan dengan keunggulan media web sehingga dapat diperoleh hasil berupa sebuah sistem informasi yang berguna dan bermanfat…
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Judul: Sistem Informasi Sebaran Ikan Ekonomis Penting di Indonesia Berbasis Web
Abstrak: Regulations of the Republic of Indonesia Number 45 of 2009 stated that government and local government have to establish information system of fisheries so that the fisheries information can be easily and quickly accessed by the community. However, in particular information systems of fisheries that contain distribution and statistical data of economically important fishes in Indonesia are still less than optimal. The purpose of this research is to build the application of information system that contains the spatial distribution of economically important fishes in Indonesia and to determine the distribution of shrimp, tuna, skipjack tuna and bullet tuna based on statistical data of marine capture fisheries. The result of this study is web-based application called Information System of Distribution of Economically Important Fishes in Indonesia. This application can be accessed at http://siikan.site90.net. The main information presented in this application is time series of fisheries statistical data from 2003 to 2011 based on province in Indonesia. Through this information system, it can be seen that the shrimp, skipjack tuna and bullet tuna are found in all provinces in Indonesia, while the tuna are not found in the province of Riau, Riau Islands, Bangka Belitung Islands, Jambi, South Sumatra, and Central Kalimantan.
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Judul: Thermal Characteristics and Dynamics of Tropical Cyclone over Western North Pacific Ocean: A Case Study of Typhoon Songda (Chedeng) 2011
Abstrak: The frequent occasion of Tropical Cyclone (TC) over Western North Pacific (WNP) Ocean lies from 10˚N to 26˚N and 121˚E to 170˚E. Sources of TC development come from warm ocean temperature where latent heat is released during condensation processes and subsequently concentrated in the boundary layer. Relative humidity at 850-700 hPa is responsible to produce the most intense storm. Meanwhile, weak vertical wind shear between 850-200 hPa is one of the dynamical factors that lead to the development of TC. Pressure level of 850-200 hPa is chosen to minimize the thermodynamic effect in the lower troposphere. Typhoon Songda (Chedeng in the Philippines) or TSC lasted from May 18th to 30th, 2011 and strengthened into powerful Super Typhoon stage between May 24th and 27th. Long curving track and the exhibition of all sequences of TC life cycle, TSC is then considered as an ideal case of TC. The objective of the study with case of TSC is to investigate the role of thermal characteristics and dynamics on TC intensity. The research is carried out by using Advanced Research of Weather Research and Forecasting model (WRF ARW model) version 3.3. Two domains are employed in the model. The first domain situate from 02˚N to 40˚N and 118˚E to 149˚E and cover spatial resolution () of 33.1 km. The second domain situate from 09˚N to 27˚N and 119˚E to 132˚E with of 11 km. Timestep of the model () is 120 seconds. The model is supported by the following physical parameterization, i.e., Yonsei University Scheme (YSU) in the boundary layer, Kain-Fritsch scheme (KF) in the cumulus, and WRF Single-Moment 3-class scheme in the microphysics. Initial meteorological condition prior to the formation of the cyclone is generated using WRF ARW standard-release model. Sensitivity of the model output is obtained from a selected single-parameter change scenarios, namely, 10 % to 20 % decrease and increase of wind shear initial data at 850-200 hPa, and by 10 % to 20 % decrease of relative humidity initial data at 850-700 hPa. The result showed that the negative correlations between wind shear and intensity are found in wind shear scenarios. Wind shears of 10 ms-1 which lead to strengthening of the wind intensity in the early period of Typhoon development are found in wind shear scenarios. The effect of wind shear changes on wind intensity is statistically significant in the 20 % wind shear scenarios. During mature stage, weak wind intensity occurred when wind shear increase as given in the WRF standard-release and the 20 % decreasing scenario. Different situation is found in the 20 % increasing scenario where wind shear tend to weak and lead to strong wind intensity at this stage. Meanwhile, the reduction of moisture supply at 850-700 hPa resulting from 20 % decreasing relative humidity play a major role in the weakening of wind intensity and reduces mechanical energy of the cycle process as much as 300 J kg-1.
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