Judul: Analisis Manfaat Program CSR (Corporate Social Responsibility) Chevron Geothermal Salak, Ltd Bidang Ekonomi Terhadap Pengembangan Usahatani Padi di Kecamatan Pamijahan Kabupaten Bogo
Abstrak: Industrial process by a company certainly has the side effect of their production then CSR (Corporate Social Responsibility) concept appears. CSR is an action or concept undertaken by the company as a form of their social responsibility or the environtment around them. Chevron Geothermal Salak Ltd (CGS) is one of the companies that administer CSR program. The purpose of the research is to identify the form of the implementation and benefits of economics CSR CGS program of farming and to identify the cost structure and revenue before and after receiving the CSR CGS program and to identify cost structure and the revenue of farmers owner and sharecroppers. The research method is quantitative and qualitative analysis. Quantitative analysis is used with Microsoft Excell 2007. Qualitative analysis illustrated by descriptive. The result shows that the implementation of CSR CGS economics program of farming at Pamijahan consists of several support, those are farming and raising sheep support, Siraa (financial services business partner) cooperation institution support, automotive (machine shop), and woven bamboo and seedlings support. The program that related to rice farming development are farming and sheep support consisting of several activity, such as training and extension in rice farming, seeding and fertilization of organic fertilizer, also sheep assistance. The benefit of CSR CGS program for recepients are providing knowledge and science about rice farming, production result, reduce the cost of production, and independence in the manufacture of fertilizer. Total cost farmers per hectare per cropping season and total cost per kg output of farm before receiving the CSR CGS program is bigger than after receiving the program. The revenue on cash cost and total per hectare per cropping season and per kg output of farm before receiving the CSR CGS is smaller than after receiving the program. Analytical of ratio is also showing that benefit/cost of rice farming before receiving the CSR CGS program is smaller than after receiving program
Keyword: Bogor Agricultural University (IPB), revenue structure., cost structure, rice farming, ltd, chevron geothermal salak, csr

Judul: Analisis Livelihood Assets dan Dampak Program Corporate Social Responsibility (CSR) terhadap Usaha Lokal Penerima Manfaat (Studi Kasus: PT Aqua Golden Mississippi – Babakan Pari)
Abstrak: Sektor industri pengolahan berperan penting dalam pertumbuhan ekonomi Indonesia, namun kegiatan industri yang dilakukan umumnya memberikan dampak negatif bagi lingkungan sekitar. Konsep CSR muncul sebagai pendekatan strategis dalam mengatasi dampak negatif dari kegiatan industri, seperti yang diimplementasikan oleh PT Aqua Golden Mississippi – Babakan Pari melalui program CSR bidang pengembangan ekonomi. Penelitian ini bertujuan menganalisis livelihood assets penerima manfaat program CSR, menganalisis persepsi penerima manfaat terhadap program CSR, dan mengestimasi dampak ekonomi program CSR. Metode analisis yang digunakan yaitu analisis sustainable livelihood, analisis deskriptif dengan skala Likert, dan analisis pendapatan. Hasil penelitian menunjukkan livelihood assets yang dimiliki penerima manfaat program CSR bidang pengembangan ekonomi berada dalam status keberlanjutan sedang atau menengah. Penerima manfaat memiliki persepsi positif terhadap program CSR bidang pengembangan ekonomi. Usaha lokal yang didampingi oleh CSR PT AGM Babakan Pari tergolong menguntungkan dengan nilai R/C ratio lebih dari satu., The manufacturing industry sector plays an important role in Indonesia's economic growth, but the industrial activities generally have a negative impact on the surrounding environment. The concept of CSR emerged as a strategic approach in overcoming the negative impacts of industrial activities, as implemented by PT Aqua Golden Mississippi – Babakan Pari through a CSR program in the field of economic development. This study aims to analyze the livelihood assets of beneficiaries of the CSR program, analyze beneficiary perceptions of the CSR program, and estimate the economic impact of the CSR program. The analytical methods used are sustainable livelihood analysis, descriptive analysis using a Likert scale, and income analysis. The results of the study show that the livelihood assets owned by beneficiaries of the CSR program are in a medium sustainability status. Beneficiaries have positive perceptions of CSR programs in the field of economic development. Local businesses assisted by CSR PT AGM Babakan Pari are classified as profitable with an R/C ratio of more than one.
Keyword: CSR, income, Likert scale, perception, sustainable livelihood

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.
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