Judul: Analisis Luas Lahan Sawah Berbasis Citra MODIS di Provinsi Jawa Barat Tahun 2002-2012
Abstrak: West Java is the largest province in Java Island that had been experiencing rice field land conversion since 1999. Agricultural statistic data that provide by National Statistic Agency (BPS) has several lacks in monitoring process of rice field area year to year, therefore it is required to improve other alternatives to the collected data by satellite imagery. The aims of this research were to detect rice field area based on rice field categorization in West Java derived from MODIS imagery and to obtain the differences of rice field area between MODIS imagery and agricultural statistic data of BPS from 2002 to 2012. The results showed that there were noticeable differences of rice field area in Ciamis, Bogor, Bandung, and Purwakarta districts. In West Java, rice field area during 2002 until 2010 derived from MODIS imagery were higher than those derived from agricultural statistic data of BPS.
Keyword: West Java, paddy rice fields area, MODIS, agriculture statistic data

Judul: Sistem Akuisisi dan Pengolahan Data Citra Satelit untuk Pemantauan Perubahan Lahan Pertanian di Provinsi Jawa Barat 2000-2015
Abstrak: Jawa Barat merupakan provinsi yang mengalami alih fungsi lahan sawah terluas di Pulau Jawa sehinga perlu dilakukan monitoring dalam kaitannya dengan perubahan fungsi lahan. Metode pemantauan lahan dengan MODIS telah banyak dilakukan namun masih menggunakan lebih dari satu perangkat lunak. Penelitian ini bertujuan membangun sistem akuisisi dan pengolahan data citra yang memudahkan pengguna dalam memantau lahan. Produk MODIS yang digunakan dalam penelitian ini adalah MOD13Q1, yang memotret indeks vegetasi harian sehingga dapat menampilkan dinamika musiman untuk pola sawah. Data MODIS EVI masih mengandung gangguan atmosfer sehingga perlu dilakukan koreksi sinyal dengan filter transformasi wavelet coifflet untuk mengurangi gangguan. Kemudian dilakukan pengelompokan pola tanam dengan metode pengelompokan k-mean untuk mendapatkan kelompok yang sama pola tanam, intensitas tanam dan perubahannya. Penelitian ini menghasilkan graphical user interface (GUI) dalam software Matlab. Hasil yang diperoleh berupa peta hasil stacking, hasil denoising, serta peta hasil clustering.
Keyword: Matlab, MODIS, k-mean clustering, rice field, Wavelet transformation, Agricultural land, Acquisition systems, Investigasi sistem, Analisis sistem, Desain sistem, Desain interface

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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