Prototipe Jaringan Syaraf Tiruan untuk Mendeteksi Banjir Menggunakan Metode Backpropagation

Tujuan dari penelitian ini adalah untuk merealisasikan alat pendeteksi banjir berupa model prototipe yang akan digunakan untuk mendeteksi banjir. Variabel yang digunakan dalam penelitian ini antara lain Intensitas hujan, koefesien buangan air, luas area terbangun, luas genangan di permukaan air. Metode yang digunakan backpropagation karena metode ini cocok digunakan untuk melakukan proses deteksi banjir berdasarkan variable yang digunakan. Penelitian ini menghasilkan prototipe pendeteksi banjir berupa alat simulasi banjir yang dapat dikembangkan menajadi alat tepat guna. Hasil uji prototipe sistem ini memiliki keakurasian yang terletak pada chip microprocessor dan system sensor ultrasonik yang menghasilkan tingkat MSE 0.9% dan tingkat keakurasian 99.8%, terhadap Perubahan ketinggian air perdetik

Analisis Sebaran Lokasi SMA di Kabupaten Pesawaran

This study aimed to map and analyze the distribution of the absolute location, distribution patterns, distance and level of accessibility of SMA in Pesawaran District. This research used descriptive method. Subject research was 19 schools, the object of research was study of geography concerning the absolute location, distribution patterns, distance and accessibility. The data collection technique used documentation and observation. The results showed, 1) the distribution pattern of Senior high school in the Pesawaran district was classified into the pattern of random, 2) Distance to every senior high school in the Pesawaran District to population was far, 3) Accessibility from the settlement to senior high school in the Pesawaran district categorized medium. Based on the results, it could be concluded that the distribution pattern, distance and level of accessibility could map easily and accurately.Penelitian ini bertujuan memetakan dan menganalisis sebaran lokasi absolut, pola sebaran, jarak dan tingkat aksesibilitas SMA di Kabupaten Pesawaran. Penelitian ini menggunakan metode deskriptif. Subjek penelitian berjumlah 19 SMA, objek penelitian adalah kajian geografi yang menyangkut lokasi absolut, pola sebaran, jarak dan aksesibilitas. Pengumpulan data dilakukan dengan cara dokumentasi dan observasi. Hasil penelitian ini dapat diketahui dan di analisis bahwa, 1) pola sebaran SMA di Kabupaten Pesawaran digolongkan menjadi pola random, 2) Jarak setiap SMA di Kabupaten Pesawaran dengan pemukiman penduduk jauh, 3) Aksesibilitas dari pemukiman ke SMA di Kabupaten Pesawaran dikategorikan menengah. Berdasarkan hasil penelitian, dapat disimpulkan bahwa, pola sebaran, jarak, dan tingkat aksesibilitas dapat dipetakan degan mudah dan akurat

Flow Field Evolution of a Decaying Sunspot

We study the evolution of the flows and horizontal proper motions in and around a decaying follower sunspot based on time sequences of two-dimensional spectroscopic observations in the visible and white light imaging data obtained over six days from June~7 to~12, 2005. During this time period the sunspot decayed gradually to a pore. The spectroscopic observations were obtained with the Fabry-P\'{e}rot based Visible-Light Imaging Magnetograph (VIM) in conjunction with the high-order adaptive optics (AO) system operated at the 65 cm vacuum reflector of the Big Bear Solar Observatory (BBSO). We apply local correlation tracking (LCT) to the speckle reconstructed time sequences of white-light images around 600 nm to infer horizontal proper motions while the Doppler shifts of the scanned \FeI line at 630.15 nm are used to calculate line-of-sight (LOS) velocities with sub-arcsecond resolution. We find that the dividing line between radial inward and outward proper motions in the inner and outer penumbra, respectively, survives the decay phase. In particular the moat flow is still detectable after the penumbra disappeared. Based on our observations three major processes removed flux from the sunspot: (a) fragmentation of the umbra, (b) flux cancelation of moving magnetic features (MMFs; of the same polarity as the sunspot) that encounter the leading opposite polarity network and plages areas, and (c) flux transport by MMFs (of the same polarity as the sunspot) to the surrounding network and plage regions that have the same polarity as the sunspot.Comment: 9 pages, 7 figures, The Astrophysical Journal, accepted September, 200

Brief Report: Is Impaired Classification of Subtle Facial Expressions in Children with Autism Spectrum Disorders Related to Atypical Emotion Category Boundaries?

Impairments in recognizing subtle facial expressions, in individuals with autism spectrum disorder (ASD), may relate to difficulties in constructing prototypes of these expressions. Eighteen children with predominantly intellectual low-functioning ASD (LFA, IQ <80) and two control groups (mental and chronological age matched), were assessed for their ability to classify emotional faces, of high, medium and low intensities, as happy or angry. For anger, the LFA group made more errors for lower intensity expressions than the control groups, classifications did not differ for happiness. This is the first study to find that the LFA group made more across-valence errors than controls. These data are consistent with atypical facial expression processing in ASD being associated with differences in the structure of emotion categories