Full-waveform inversions were applied to retrieve surface, two-layered and continuous soil moisture profiles from ground penetrating radar (GPR) data acquired in an 11-ha agricultural field situated in the loess belt area in central Belgium. The radar system consisted of a vector network analyzer combined with an off-ground horn antenna operating in the frequency range 200-2000 MHz. The GPR system was computer controlled and synchronized with a differential GPS for real-time data acquisition. Several inversion strategies were also tested using numerical experiments, which in particular demonstrated the potentiality to reconstruct simplified two-layered configurations from more complex, continuous dielectric profiles as prevalent in the environment. The surface soil moisture map obtained assuming a onelayered model showed a global moisture pattern mainly explained by the topography while local moisture patterns indicate a line effect. Two-layered and profile inversions provided consistent estimates with respect to each other and field observations, showing significant moisture increases with depth. However, some discrepancies were observed between the measured and modeled GPR data in the higher frequency ranges, mainly due to surface roughness effects which are not accounted for. The proposed GPR method and inversion strategies show great promise for high-resolution, realtime mapping of soil moisture at the field scale. * julien.minet@uclouvain.be
Proses seleksi dalam penerimaan karyawan masih mengalami kendala. Secara praktikal terdapat beberapa karyawan yang tidak benar benar menguasai apa yang mereka kerjakan sehingga kegiatan operasional kurang berjalan dengan baik. Selain itu banyaknya pelamar yang ada membuat bagian terkait memerlukan waktu yang lama dalam mempertimbangkan calon karyawan yang akan diterima. Dalam ilmu komputer terdapat suatu sistem yang dapat membantu pengambil keputusan untuk mengatasi masalah yang sifatnya semi struktur ataupun tidak terstruktur yaitu sistem pendukung keputusan. Dalam Sistem Pendukung Keputusan terdapat berbagai metode salah satunya yaitu metode Profile Matching. Profile Matching ini sendiri dapat membantu dalam menentukan prioritas dari beberapa kriteria dengan melakukan analisa dari masing-masing kriteria yang sudah ditentukan. Dengan melihat masalah yang ada dalam pengambilan keputusan dalam penerimaan karyawan baru, sistem pendukung keputusan dengan menggunakan metode Profile Matching dirasa tepat untuk digunakan dalam membantu pengambilan keputusan. Dengan adanya penelitian ini proses seleksi karyawan baru dapat dilakukan dengan tepat dan cepat.Kata Kunci : Seleksi Karyawan, Ilmu Komputer, Sistem Pendukung Keputusan, Metode Profile Matching.
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