Judul: Strategy to Enhance Economic Condition of Kuantan Singingi Regency Rlau Province through The Treatment of Liquid Waste of on Palm to become Biodiesel
Abstrak: Previously Indonesia constitues a net-exporter country in the field of oil fuel (BBM) but currently has become net-importer of BBM as of 2000. Kuansing Regency is capable to produce liquid waste of 35,640 ton per-day or 1.07 million ton per-month. But up to now the treatment of such liquid waste has not been well utilized economically as raw material for bio-diesel and therefore such liquid waste is deemed as ''waste'' that provides negative externality against community existing surrounding factory. Meanwhile in one side there is a need for Fuel Oil (BBM) that is sufficiently big in order to support energy procurement in Kuantan Sengingi Regency. Based on analysis of Locations Quotient (LQ) and Specialization Index (SI), conclusion can be made that Sub-district of Benai Constitutes a strategic location for the development ofbio-diesel industry the raw material of which is originated from (liquid waste) in Kuantan Sengingi Regency. Financially the .development of bio-diesel with, Indonesia dulunya merupakan negara net-exporter di bidang bahan bakar minyak (BBM) kini telah menjadi net-impoter BBM sejak tahun 2000. Hal ini sungguh ironis karena teJjadi pada saat harga minyak dunia tidak stabil dan cenderung mengalami peningkatan. Pada periode bulan Januari-Iuli 2006, produksi BBM Indonesia hanya mencapai 1,03 juta barel per hari, sedangkan konsumsi BBM mencapai sekitar 1,3 juta barel per hari sehingga terdapat defisit BBM sebesar 270.000 barel yang harus dipenuhi melalui impor. Dengan harga minyak dunia mencapai US$ 108 per barel, untuk memenuhi deflSit tersebut Indonesia hams menyediakan budget setiap harinya sekitar US$ 29.160.000 per hari atau sekitar Rp 170 miliar per hari. Setiap 1 ton tandan buah segar (TBS) akan dihasilkan limbah cair (liquid waste) sebanyak 600-700 kg. Iika dihitung secara matematis maka masing-masing PKS di Kabupaten Kuantan Singingi akan menghasilkan liquid waste sebesar 324 ton per hari. Sehingga Kabupaten Kuansing dapat memproduksi liquid waste sebanyak 35.640 ton sehari atau 1,07 juta ton per bulan. Tetapi hingga saat ini pengelolaan liquid waste tersebut belum dimanfaatkan secara baik dan ekonomis sebagai bahan bakubiodiesel, dan karenanya
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Judul: Model pengelolaan pemanfaatan bahan bakar nabati biodiesel kelapa sawit di Jakarta dan sekitarnya
Abstrak: Research on biodiesel, is still a further study on the technical and economic aspects, while the ongoing research of integrated policy still not exists. Therefore it is necessary to do research on the use of palm oil biodiesel as biofuel that sustainable, especially in the area of Jakarta and its surrounding, such as part of Bogor, Depok, Tangerang and Bekasi .This study, in general aim to build a model of the management of palm oil biodiesel as biosolar in the such area on an ongoing basis. Object of the study limits the fuel distribution line administratively located in the Jakarta area. This research method is done by soft systems approach methodology (SSM), mainly using analytical techniques MDS (Multidimensional scaling), interpretative Structural Modeling (ISM), and AHP (Analytical Hierarchy Process), which supported by other methods such as brainstorming, expert survey (survey of experts) , face validity and policy analysis either hard system approach methodology (HSM), such as the economic feasibility analysis (BEP, B / C Ratio, NPV, IRR and Payback Period) and dynamic system analysis. The results of MDS analysis showed that of the five dimensions of sustainability, only environmental and technological dimensions beyond the sustainability index. While the other three dimensions (social, economic, and policy) have not met the limits of sustainability indexes. In general, the review of utilization of Biodiesel as biofuel from view point of economic is feasible but not sufficiently attracts the investment. At time being the existing regulation are still to be deployed in such manner in order to be workable, especially the local regulatory that in line with such program as shown in the result of policy content analysis result.. ISM analysis results show the structure of influence and interest levels conjunction to achieve the management of sustainable utilization of Biodiesel as biofuel. AHP results indicate that increasing the content of biodiesel is still a priority that must be done to support the management of sustainable utilization of Biodiesel as biofuel in the Jakarta area supported by following the price of raw materials, increasing the role of central government, and ensuring the availability of fuel in the Jakarta area. All analysis results can be developed as BBN model of management of sustainable utilization of palm oil biodiesel in Jakarta and its surrounding
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Judul: Penentuan Nilai Eigen dan Vektor Eigen dari Matriks Tridiagonal 2-Toeplitz dengan Pendekatan Polinomial Chebyshev
Abstrak: The eigenvalues and eigenvectors of a matrix can be determined by finding its characteristic polynomials. The characteristic polynomials of a tridiagonal 2-Toeplitz matrix is shown to be closely connected to polynomials which satisfy the Chebyshev recurrence relationship. If the order of the matrix is odd, then the eigenvalues are found explicitly in terms of the Chebyshev zeros and the eigenvectors are found in terms of the polynomials satisfying the recurrence relationship. For even ordered matrices, the situation is more complicated. The problem in these cases is that although the Chebyshev recurrence formula is still applied, its initial values are not generating Chebyshev polynomials
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