Judul: Strategi pengelolaan lingkungan berdasarkan pemodelan kualitas air di Perairan Estuaria Tallo Sulawesi Selatan
Abstrak: Tallo River is one of the rivers in the northern city of Makasar, exists many activities, such as, industrial, aquaculture, agriculture, transportation area. The domestic activities have contributed of solid and liquid waste on Tallo river and Tallo estuary. The previous studies indicated that the activities at the river area have influenced on water quality Tallo rivers and Tallo estuary. To decrease the effect of the activities on sustainability of estuary and river function, a model design of the water quality management that involves of many elements based on simulation of water quality models is required. this model can be used as a recomendation for local government policies to conserve the aquatic environment in the future.
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Judul: Integrated and sustainable management policy  models in the coast of Makassar, Sulawesi Selatan
Abstrak: Decreasing of water quality in the coastal area of Makassar probably comes from three dominant resources i.e. population concentration in the city, industrial activities surround the city and agricultural activities in up land area of Jeneberang river. This research is aimed to design integrated and sustainable management models for coastal area: a) knowing sustainability status of coastal area of Makassar, b) knowing the rate of land use for coastal area of Makassar, c) arranging policy strategies for coastal area d) developing management for coastal area of Makassar. In order to know sustainability status for coastal area of Makassar, Multidimensional scaling (MDS) by using Rapfish computer software was applied. Prospective analysis is applied to create a scenario of sustainable development for coastal area of Makassar in the future by defining key factors which influence on system work. In general there are four steps of suitability analysis were conducted, i.e. (i) develop maps of the area, (ii) develop suitability matrix of every activities would be done (iii) ranking and standardizing and (iv) conducting spatial analysis for knowing suitability in every further activities.
Keyword: land use, policy strategy, multidimential scaling, water quality, South Sulawesi

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