Judul: Urban ecotourism area development planning at Jakarta’s Ciliwung River Corrido
Abstrak: Ciliwung River is the longest river passing in the centre of Jakarta, Capital City of Indonesia. Its history and existence are very important to the community life as well as urban landscape. Now days, along the river, there are various problems such land use change, cleanliness, flood hazards and water pollutions. The objective of this research was to evaluate the river’s potential area for developing the river area to be urban ecotourism by identifying its tourism resources, analyzing its tourism objects and attractions, and planning the development of Ciliwung’s river corridor. The field observation was conducted in January 2007. A qualitative method was carried out to analyze data. The research of these data analyze, then, was overlaid in order to get a potential zone for urban ecotourism. The research results show that only some part of the upstream Ciliwung River is classified as suitable zone with a very high potency for developing urban ecotourism, the middle part as a lower one, and the downstream as moderate one. Planning for the development of urban ecotourism is made for every zone according to its potential classification which are the highest will become the centre of development.
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Judul: Urban riverscape evaluation using visual and environment quality approaches (case study: Cisadane River, at Bogor, West Java Province, Indonesia)
Abstrak: Riverscape, which is one of the natural and tropical beauty exist in almost all of Indonesia's urban areas, plays important roles ecologically as well as visually. In most urban development, however, most of those river are neglected. The researhes objective was to evaluate urban's riverscape, so an urban management could be recommended.
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Judul: Transisi Fasa Materi Hadronik ke Materi Kuark pada Inti Bintang Neutron.
Abstrak: Bintang neutron terdiri dari beberapa lapisan yang disusun oleh materi nuklir yang berbeda dengan kerapatan yang semakin tinggi ketika mendekati pusat bintang. Inti luar bintang neutron disusun oleh materi hadronik (nukleon, lepton, dan hyperon), sedangkan inti dalam bintang neutron disusun oleh kuark-kuark bebas (up, down, strange) yang saling berinteraksi. Tujuan penelitian ini adalah mempelajari bagaimana transisi dari inti luar ke inti dalam bintang neutron dengan menggunakan pendekatan RMF (Relativistic Mean Field) untuk materi hadronik dan CIDDM (Confined Isospin Density Dependent Mass) untuk materi kuark. Tekanan transisi diperoleh ketika potensial kimia barion materi hadronik dan materi kuark bernilai sama. Nilai tekanan transisi dengan parameter SU6-TM1 sekitar 87 MeV/fm3 dan diperoleh massa maksimum bintang neutron yaitu 1.92M dengan jari-jari sekitar 8.62 km. Nilai tekanan transisi dengan parameter SU6-G2 sekitar 53 MeV/fm3 dan massa maksimum bintang neutron yaitu 1.88M dengan jari-jari sekitar 8.16 km. Jenis transisi fasa adalah orde satu ditandai dengan diskontinuitas dalam kerapatan energi (adanya mixed phase). Parameter-parameter pada model nuklir yang digunakan menyebabkan perbedaan kekakuan persamaan keadaan (EOS) dari materi hadronik dan materi kuark sehingga nilai tekanan transisi dari fasa hadronik ke fasa kuark juga berbeda.
Keyword: bintang neutron, persamaan keadaan, transisi fasa