Judul: Perbandingan Kelestarian Hutan Rakyat Bersertifikat dan Tidak Bersertifikat di Kabupaten Kulonprogo
Abstrak: Forest community certification is an instrument to achieve sustainability forest management in ecology, economy, and social aspects. The objective of this study was to obtain forest management data based on ecology, business feasibility, and organizational in groups that have been certified and uncertified. The research was conducted in two locations of Kulonprogo Regency, that were Kaliagung Village, District of Sentolo that represent of uncertified forest community management unit (Marsudi Boga) and Banjararum Village, District of Kalibawang which represent of certified forest community management unit Koperasi Wana Lestari Menoreh (KWLM). The average income contribution of certified forest community (KWLM) was Rp 25 961 264/ha/year and uncertified forest community (Marsudi Boga) was Rp 6 688 540/ha/year. Carbon stock potential of certified community forests (KWLM) was 27.035 tones C/ha and uncertified forest community (Marsudi Boga) was 22.375 tones C/ha. Hence certified forest community provided better benefits in the form of higher carbon stock and average income.
Keyword: Bogor Agricultural University (IPB), Certification, Community forest

Judul: Studi Kelayakan Hutan Rakyat Dalam Skema Perdagangan Karbon (Studi Kasus Di Kawasan Hutan Rakyat Kampung Calobak, Desa Tamansari, Kecamatan Tamansari, Kabupaten Bogor, Provinsi Jawa Barat)
Abstrak: Climate change triggered by human activities that produce gases which having a greenhouse effect (Greenhouse Gas/GHG) if it accumulates in the atmosphere, thereby increasing the temperature of the earth's surface and usually called Global Warming. The rate of Indonesian forest destruction caused by deforestation and forest degradation contribute greatly to climate change and global warming. Development of Community Forest could be potential in carbon sequestration and then enter in Carbon Trading Scheme. Initiative to get the incentives for the management of Community Forests through carbon trading in the voluntary carbon market is a concrete step to participate in the adaptation and mitigation of climate change and gain maximum benefit from the ecosystem of the forest resources. So that, it is important to follow up the eligibility analysis of Community Forest in Indonesia to enter into carbon trading. Research conducted at the Community Forest Kampung Calobak, Tamansari Village, Tamansai District, Bogor Regency, Province of West Java during April-May 2010. This study uses content analysis and primary data taken consisted of community forest management conditions, written documents or conventions that can meet the certification scheme of forest resources in a field that requires The Certification Under Third Party Assessment Line C Scheme II PHBML-LEI and Plan Vivo Standards. Secondary data is physical condition, demographic and socio-economic community. The data collection will be done through a search of documents and other printed information resources as well as in-depth interviews as a form of direct communication between researcher and respondent, is also used to obtain primary data. Eligibility of forest certification scheme of kampung calobak to The Certification Under Third Party Assessment Line C Scheme II PHBML-LEI is GOOD Value > 25% x n = 25% x 32 = 8 indicators and FAIR > 50% x n = 50% x 32 = 16 indicators. Thus, based on guidelines LEI certification decision, the community forest management Calobak get the title of "DO NOT PASS". The cause of the lack of graduates, among others: (1) There is no valid data and information concerning any statement or agreement forest management group, (2) Currently there are no documents or information on Areal maps, conditions or profile in the management of human resources, (3) Lack of public knowledge about sustainable forest management, (4) The public and the Government has not understood about forest certification (benefits, importance, etc.). The assessment results of community forest in Calobak under the Plan Vivo Standards only able to meet the four indicators of the 37 indicators or data that should be available. The causes of the gap include: (1) The Local government and the public cannot find out information about carbon trading that can provide a direct incentive, (2) Local and regional market demand was still high. Thus, the factors that can inhibit the certification and carbon trade in community forest are: (a) Forest farmers lack knowledge about carbon trading and certification PHBML, (b) Constrained in the financing, (c) Management and institutional aspects that have not been steady. Meanwhile, factors which can stimulate interest in and signed in to perform certification and carbon trading are: (a)
Keyword: 

Judul: Hamiltonian formulation for linear waves motion in two layers fluid
Abstrak: The surface wave could be considered as a wave that separates two fluids, namely water and air. Based on this assumption, it is introduced the interfacial wave, a wave between two layers of fluid with different density. The formulation of interfacial waves motion begins with deriving the base equation of irrotational ideal fluid. Furthermore, according to irrotational fluid assumption, the base equation can be stated in velocity potential. In this derivation, the fluids domain is assumed to be restricted by rigid lid boundary conditions, both at the upper and lower limit. Therefore, the interfacial waves motion can be explained in a hamiltonian formulation. In the hamiltonian formulation, total energy is defined as the sum of kinetic and potential energy. The hamiltonian system is obtained from reduction of kinetic energy by using the Dirichlet Neumann Operator. The resulted kinetic energy equation is nonlinear. Therefore, this form is linearized by first part of the Taylor expansion. This linearization gives a dispersion relation of linear wave. Based on this dispersion relation, the phase speed of the linear wave depends on the density ratio of the two layers fluid.
Keyword: