Judul: Evaluasi kebijakan pengambilan dan pemanfaatan air tanah di Provinsi DKI Jakarta
Abstrak: The formulation and implementation policies have been the key factors in preventing the occurrence of groundwater depletion. Groundwater exploitation and utilization in Jakarta have been predicted to cause the decline of groundwater level, land subsidence and salt water intrusion. The policy established by the local government of DKI to handle these conditions is to establish the increase of groundwater tax. The study aimed to collect the policies regarding the groundwater use, to evaluate the impact of the increase of groundwater tax, and to compare between the costs of groundwater exploitation and utilization and the tariff of piped water supplied by PAM DKI Jakarta.
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Judul: Inter basin management model for sustainable water supply (case study: to fulfill water supply for DKIJakarta )
Abstrak: Jakarta is capital of Indonesia and as a big city with the administrative status of a regency or province with 9.588.198 people in 2010 (BPS, July, 2010). Jakarta needs water 524.953.840 for domestic and non domestic 212.606.350 m3 and totally 737.560.145,20 m3. PAM Jaya production capacity in 2009 is about 509.431.934 m3/year, about 69,07% the total needs of DKI Jakarta. To fulfil the water, Jakarta needs water supply from the other provinces, 80% water supply for Jakarta are from Citarum (West Java) and Cisadane (Tangerang-Banten) and others. A research has been done within 13 months started from 2010 July until 2011 August. The research is aimed to identify the supply and demand of water and to structurize the role and relationship of stakeholders in the fulfilment the water supply inter basin. The methodology analysis were Interpretative Structure Modelling (ISM), Multy Dimensional Scalling (MDS) and System Dinamic. The goverment has a central role to fulfil the needs of water supply, fulfilment water needs to understand more about supply and demand of water. The problem was the flood had often occured. The sustainable of fulfillment water supply for DKI Jakarta has economy dimensional (69,17), social dimensional (56,52), dimensional of law and institution (68,24), dimensional of infrastructur and technology (61,45), but dimensional of ecology is not sustainable with the score (48,75). In the dynamic model is built, after a policy intervention program 3R, BKT, 13 rivers, desalination, reduction in leakage, PES and others, the need for clean water and adequate Jakarta in 2030 met with no water supply in the soil water uptake and shallow ground water. Jakarta water needs can be met by working together across the region with local government and local government Tangerang Banten Jabar in the utilization of water resources in the watershed that flows in the region with payments for environmental services or PES 50 billion per year.In order to achieve water security, Jakarta needs to build policy scenarios that lack of clean water to Jakarta in the future does not happen again. Both policy scenarios related to supply and demand management and water management technologies, among others, the construction of large dams which hold water from 13 rivers that flow into Jakarta. Building a pipeline project from Jatiluhur reservoir and increase flow of raw water sources other outside Jakarta to conduct inter-regional cooperation. In addition to the management of raw water in the watershed that is the method of normalization ultraviltrasi 13 coupled with the existing river / flowing in Jakarta. In 2031 the use of ground water in the capital should be discussed again with the stakeholders or the public through public consultation, needs to be rethought termination step permits the use of groundwater in the year 2031.
Keyword: Water supply, inter basin, sustainable management, supply demand, DKI Jakarta

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