Judul: Potential of Useful Plants of HCV (High Conservation Value) Area in Palm Plantation Areas at Kapuas Hulu District, West Kalimantan Province (Case Study at PT Sawit Kapuas Kencana, PT Paramitra Internusa Pratama and PT Persada Graha Mandiri).
Abstrak: Based on the result of High Conservation Value (HCV) study, which performed by Tim Terpadu (2010a, 2010b, 2010c) in PT Sawit Kapuas Kencana (PT SKK), PT Paramitra Internusa Pratama (PT PIP) and PT Persada Graha Mandiri (PT PGM), there has been found respectively 259, 225 and 149 plant species. Nevertheless, data and information about the potential of useful plants were unknown yet. In order to support its conservation and utilization efforts, all data and information about potential of useful plants was critically required, thus this research was required. The objective of this research was to identify the potential of useful plants in palm plantation area in Kapuas Hulu district, West Kalimantan province. This research performed at Section of Plants Diversity Conservation, Department of Forest Resource Conservation and Ecotourism, Forestry Faculty of Bogor Agricultural University (BAU), library of Forestry Faculty and LSI library of BAU at April to June 2011. Collected data and information in this research included primary and secondary data. Primary data collected by observation and literature review, while secondary data collected by literature review. Result identification shows that 355 species of useful plants, which classified into 88 families, found in study area with detail: PT SKK (225 species and 77 families), PT PIP (208 species and 65 families) and PT PGM (140 species and 46 families). Useful plants, in this research, was classified into 13 groups; those are: medicine (PT SKK: 100 species, PT PIP: 60 species and PT PGM: 38 species), ornament (PT SKK: 25 species, PT PIP: 22 species and PT PGM: 9 species), aromatic (PT SKK: 12 species, PT PIP: 12 species and PT PGM: 8 species), food (PT SKK: 62 species, PT PIP: 44 species and PT PGM: 35 species), feed (PT SKK: 21 species, PT PIP: 14 species and PT PGM: 6 species), herbal pesticide (PT SKK: 4 species, PT PIP: 4 species and PT PGM: 3 species), fibre (PT SKK: 6 species, PT PIP: 5 species and PT PGM: 1 species), colour and tannin (PT SKK: 24 species, PT PIP: 17 species and PT PGM: 13 species), construction material (PT SKK: 69 species, PT PIP: 58 species and PT PGM: 35 species), traditional custom material (PT SKK: 13 species, PT PIP: 11 species and PT PGM: 10 species), rope, plait and handicraft material (PT SKK: 21 species, PT PIP: 22 species and PT PGM: 16 species), fuel (PT SKK: 23 species, PT PIP: 17 species and PT PGM: 16 species) and others (PT SKK: 21 species, PT PIP: 18 species and PT PGM: 12 species).
Keyword: 

Judul: Potensi tumbuhan berguna pada areal HCV (High Conservation Value) di perkebunan kelapa sawit Kabupaten Ketapang, Kalimantan Barat (Studi kasus di PT Agro Lestari Mandiri, PT Kencana Graha Permai dan PT Lanang Agro Bersatu)
Abstrak: Berdasarkan hasil kajian High Conservation Value (HCV) yang telah dilakukan oleh Tim Terpadu (2010a, 2010b, 2010c) di PT Agro Lestari Mandiri (PT ALM), PT Kencana Graha Permai (PT KGP) dan PT Lanang Agro Bersatu (PT LAB) Kabupaten Ketapang, Provinsi Kalimantan Barat, ditemukan jumlah jenis tumbuhan berturut-turut sebanyak 278, 180 dan 300 jenis. Namun data dan informasi mengenai potensi tumbuhan berguna belum diketahui. Data dan informasi tentang potensi tumbuhan berguna yang dibutuhkan sebagai dasar pengelolaan dalam upaya pelestarian tumbuhan berguna belum tersedia, sehingga perlu dilakukan penelitian ini.
Keyword: 

Judul: Invers dari Matriks Tridiagonal Jacobi
Abstrak: Suatu matriks berukuran n×n dinamakan matriks tridiagonal jika untuk . Karya ilmiah ini memberikan algoritma yang mudah untuk menemukan invers ( dari matriks tridiagonal Jacobi yang simetrik dan nonsimetrik. Setiap elemen pada matriks tridiagonal ini adalah bilangan real. Terdapat 3 lema dan 2 teorema untuk menentukan . Lema pertama menunjukkan persamaan utama dalam membuktikan lema-lema dan teorema-teorema selanjutnya. Invers dari matriks yang simetrik dibuktikan oleh lema kedua yang menunjukkan elemen-elemen baris ke- dari . Selanjutnya, lema kedua dilengkapi dengan teorema pertama yang menunjukkan elemen-elemen dengan . Invers dari matriks yang nonsimetrik dibuktikan oleh lema ketiga yang menunjukkan elemen-elemen dengan dan elemen-elemen dengan dibuktikankan oleh teorema kedua.
Keyword: symmetric, nonsymmetric, matrix