Judul: Sistem Informasi Geografis Berbasis Web untuk Produksi Kedelai di Indonesia Menggunakan K-Means Clustering
Abstrak: Information concerning areas that are potential for soybean production is not provided in an interactive information system that can be easily accessed by public. Nowadays, information about soybean production in all districts in Indonesia is displayed in the tabular form in the website http://aplikasi.deptan.go.id/bdsp. For that, in this study, a web-based geographic information system (GIS) was developed to manage and visualize soybean production in all districts in Indonesia. K-means clustering was performed to group data on production, productivity and harvested areas of soybean to make the coloring process become easier in GIS. The best clustering was obtained with 4 clusters and the sum square error (SSE) were 2.07, 1.53, and 0.0037 for data on production, productivity, and harvested areas of soybean, respectively. The GIS was developed using OpenGeo Suite 3.0 as the geospatial tool for managing and providing information about soybean production in Indonesia in forms of maps, tables, and graphs based on the results of k-means clustering.
Keyword: soybean production, k-means, clustering, geographic information system

Judul: Visualisasi K-Means clustering pada data potensi pertanian desa di Bogor  menggunakan MapServer
Abstrak: Badan Pusat Statistik (BPS) melakukan survei potensi desa yang menghasilkan data potensi/keadaan meliputi keadaan sosial, ekonomi, penggunaan lahan, sarana dan prasarana sampai level desa/kelurahan. Penelitian perlu dilakukan untuk menganalisis data potensi desa khususnya yang berhubungan dengan pertanian. Salah satunya dengan mengaplikasikan teknik data mining agar diperoleh suatu informasi atau pengetahuan sebagai penunjang pengambilan keputusan untuk pembangunan sektor pertanian. Penelitian ini menggunakan salah satu teknik data mining yaitu teknik clustering dengan menggunakan algoritme K-Means dan hasil clustering divisualisasikan dalam bentuk sistem informasi geografis berbasis web. Data yang digunakan dalam penelitian ini adalah data potensi desa Jawa Barat tahun 2006 khususnya daerah Bogor
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Judul: The Effects of Hypothyroidism in the Fertility of Male Rats
Abstrak: Thyroid hormones are involved in the development and maintenance of virtually all tissues. The purpose of the study is to understand effects of the neonatal hypothyroidism in the fertility of male rats. Recent studies with juvenile rats indicate that changes in thyroid function early in life have a major impact on the endocrine and/or paracrine factors regulating testicular growth and function. However, one should keep in mind that hypothyroidism is a complex hormonal dysfunction rather than a single hormonal defect. Hypothyroidism has been also shown to reduce the secretion of GnRH (gonadotropins releasing hormone), LH (Luteinizing Hormone), FSH (Follicle Stimulating Hormone), GH (Growth Hormone) and testicular testosterone in rats. Therefore, many of the testicular changes observed in prolonged hypothyroidism could result in some degree of diminished levels of the aforementioned hormones. The transient neonatal hypothyroidism model results in the unnatural testicular development and in sperm production in neonates hence resulting in decreased fertility upon puberty.
Keyword: Hypothyroidism, Neonates, Testicular Growth, Fertility