Judul: Pola Sebaran Spasial Pajak Bumi dan Bangunan serta Harga Lahan di Kecamatan Dramaga
Abstrak: Land is an important factor of life to support food production, to balance ecology, and to ensure settlement, industry, and other facilities development. The increasing demand of land lift up its value following economic principle. Alongside land use patterns also influence land value which consequently each land use has a different value and price. The existence of Bogor Agricultural University in Dramaga Subdistrict is estimated influencing land price formation in surrounding the area. This research aims to analyze spatial distribution of land taxation in Dramaga District, to configure spatial distribution of land use in Dramaga District, to map and to analyze the spatial distribution of regional growth in Dramaga District, and to discover the effect of land taxation and the existence of Bogor Agricultural University as an education center to land price formation in Dramaga Subdistrict. In this research, we utilised Moran index, spatial analysis, simple hierarchy analysis, and multivariate regression. Moran index of land taxation shows that spatial distribution in the early observation (2006-2008) tended to cluster, but at the end of year (2009) it was likely to scatter. There was an indication that the higher value of land tax, than the smaller number of plots. The statistic G shows that land fragmentation was significantly clustered at certain location. The spatial pattern of paddy field distribution was more centered with Moran Index at 0,192 compared to residential land use with Moran Index about 0,045 in 2010. From G statistic test, the most developed village was at kampongs of Babakan Village and Dramaga Village. Then the result of multiple regression analysis shows that significant determinants of land price at 95% confidential interval were land area, land and building tax, eucledian distance to Bogor Agricultural University, and elevation.
Keyword: education center., G statistic, moran index, spatial distribution, regional development, land and building tax, Land use

Judul: Analisis Penemuan Harga Lahan Dan Kelembagaan Yang Mempengaruhinya
Abstrak: Penelitian ini bertujuan untuk (1) mempelajari: proses penemuan harga lahan (price discovery), (2) mengetahui keragaan kelembagaan jual beli lahan yang terdapat dalam transaksi lahan, 3) mengetahui perkembangan pemanfaatan lahan di bantaran sungai, sudut kota, serta kebera- daan lahan publik di Kotamadya Bogor. Penelitian dilaksanakan di 19 kelurahan/desa yang tersebar di 5 kecamatan dalam wilayah "lama" dan di 5 kecamatan di wilayah "perluasan" kotamadya. Pemilihan lokasi ditentukan secara sengaja (purposive) berdasarkan pertimbangan peruntukan wilayah, arah perkembangan kota, dan distribusi lokasi menurut pertimbangan spasial. Data primer bersumber dari jawaban atas pertanyaan menggunakan kuesioner tertutup dan terbuka kepada calo tanah (sample unit) untuk mendapatkan informasi tentang harga lahan hipotetik sesuai dengan harga pasaran yang berlaku dan informasi tentang kelembagaan jual beli. Analisis data dilakukan melalui tabulasi, analisis statistika (model regresi berganda dan model Box-Cox), dan analisis kelembagaan. Hasil penelitian yang diperoleh ialah: (1) Harga lahan di Kotamadya Bogor, baik di wilayah "lama" maupun di wilayah "perluasan" terutama dipengaruhi oleh keberadaan jalan primer, jalan sekunder, status administrasi (kelura- han atau desa), jarak terhadap Pasar Anyar, dan jangkauan terhadap sarana angkutan umum. Disamping itu dipengaruhi pula oleh status kepemilikan lahan, kepadatan penduduk kelurahan/desa, keberadaan kompleks pemukiman, dan kebijakan detil tataruang. (2) Kelembagaan jual beli lahan formal dapat mendukung kelangsungan transaksi lahan di Kotamadya Bogor tetapi berlangsung secara tidak efisien karena membutuhkan biaya transaksi yang lebih besar di- bandingkan ketentuan perundangan. (3) Biaya kontrak yang diperlukan untuk membuat akta berbeda menurut status kepemilikan lahan, wilayah administrasi,…dst
Keyword: Harga Lahan, Jual Beli Lahan, Transaksi Lahan, Penggunaan Lahan Perkotaan, Faktor Lingkungan

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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