Judul: Perencanaan Lanskap Ekowisata Karst di Lembah Mulo Yogyakarta
Abstrak: sensitive area and must be protected. Ecotourism is one of the effective way to protect and utilize the karst. The location of the research is at Mulo Valley Yogyakarta. The first methods of this research is identifying potential objects and attractions for ecotourism at Mulo Valley. Further analysis was conducted to determine the sensitivity of the karst area for the development of ecotourism. The results showed that Mulo Valley has fifteen tourist objects and attractions. The sensitivity status of the karst area is amounted to 6,8 acres (41,39%) are sensitive, 9.63 acres (58,61%) are quite sensitive, and 0 acres (0%) are less sensitive of 16,43 acres total area. The final result of this research is landscape plan. The application of the ecotourism concept aims to keep the sustainability of the karst.
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Judul: Kajian Kondisi Gua untuk Pengembangan Wisata Minat Khusus di Kawasan Karst Gudawang, Kabupaten Bogor
Abstrak: Intensive exploitation in Karst such as mining is damaging the area. On the other hand, karst possesses essensial values for human life, including ecological, economical, social and culturals. One from of conservation effort in karst, which can give benegit to local people and karst itself is ecotourism. Ecotourism development in Karst Gudawang can be to the form of special interest. This study was conducted in Karst Gudawang, Kampung Cipinang, Village Argapura, Cigudeg district, Bogor. Regency 3 months (December 2006 to February 2007). Methods use for foward method for cave mapping, interviews and field abservations for are tourism potential. Tourism analyses criteria consist of interest, climate, accessibility, infrastructure, facility, orher tourism objects, safety, caryying capacity area, tourist regulation and clean water surrounding apply. Special interest concept development in Gudawang ae adventures and education essentialy. There are 3 classification of caves for developing special interest, very suitable, sutable and unsuitable. The very suitable caves to be developed are Si Aul Tengah, Si Parat 2 and Si Garaan. The sitable caves are Si Parat 1, Si Aul Ujung and si Cayur. Si Kembar and Si Patahunan caver are not suitable to be developed
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Judul: Simulasi persamaan keadaan bintang dengan pendekatan klasik dan relativistik
Abstrak: Komposisi bintang yang selalu berubah akanmempengaruhi massa dan radius bintang itu sendiri. Dimana semakin tua sebuah bintang, maka bintang akan didominasi oleh unsur-unsur berat. Dengan persamaan politrop dan metode Runge-Kutta orde 4 didapatkan radius dan massa bintang semakin berkurang seiring berkurangnya nilai Ye, sedangkan kerapatan semakin meningkat. Pendekatan terbaik terdapat pada nilai Ye sebesar 0.5 dimana didapatkan bahwa massa bintang katai putih sebesar 1.4Mo sesuai dengan massa Chandrasekhar dengan radius bintang 5000 km dan nilai kerapatan bintang sebesar 5.31x 106 g cm-3. Untuk massa bintang neutron diperoleh nilai 0.05Modan radius bintang sebesar 2300 km, sedangkan kerapatannya bintang neutron diperoleh sebesar 1.84 x 107 g cm-3 dengan menggunakan pendekatan relativistic. Pendekatan relativistic terbukti lebih baik untuk menentukan radius dan massa bintang, dengan pendekatan terbaik pada nilai Ye sebesar 0.5 yaitu pada bintang katai putih
Keyword: Composition of the stars, density of the stars, mass of the stars, radii of the stars