Object's shadow removal with removal validation

We introduce in this paper, a shadow detection and removal method for moving objects especially for humans and vehicles. An effective method is presented for detecting and removing shadows from foreground figures. We assume that the foreground figures have been extracted from the input image by some background subtraction method. A figure may contain only one moving object with or without shadow. The homogeneity property of shadows is explored in a novel way for shadow detection and image division technique is used. The process is followed by filtering, removal, boundary removal and removal validation

On UHECR energy estimation algorithms based on the measurement of electromagnetic component parameters in EAS

Model calculations are performed of extensive air shower (EAS) component energies using a variety of hadronic interaction parameters. A conversion factor from electromagnetic component energy to the energy of ultra-high energy cosmic rays (UHECRs) and its model and primary mass dependence is studied. It is shown that model dependence of the factor minimizes under the necessary condition of the same maximum position and muon content of simulated showers.Comment: contracted version is accepted for publication in Doklady Physic

Analisis Preferensi Siswa Melanjutkan ke SMA Negeri 4 Kecamatan Marpoyan Damai Kota Pekanbaru Tahun Pelajaran 2014/2015

This watchfulness aims: 1) to analyze internal factors that be preference student chooses continue to senior high school. 2) to analyze external factors that be preference student chooses continuing to senior high school. 3) to detect category preference student internal chooses to senior high school. 4) to detect category preference student external chooses to senior high school. this watchfulness is carried out at senior high school iv district marpoyan jln adi sucipto. as to this watchfulness time in october 2014 until december 2014. this watchfulness belongs descriptive watchfulness that aims to describe systematically factual and accurate hit fact and certain population characters that are population in these watchfulness SMAN 4 Pekanbaru in tenth year that consists of 10 class that number 325 person students teachings year 2014/2015. In this watchfulness, researcher takes 50% from population total. for that, this watchfulness sample is taken student in class x1, x2, x4, and x7 that number 144. based on watchfulness analysis result that done so can be taken conclusion: 1) preferensi student from internal factor has chosen to continue to senior high school partly big because finished senior high school has wanted to continue to college, want to get proper job, value enough subsidize, as according to aim, and a minority minor part a minor part because want to finish study to s3. 2) preferensi student from external factor chooses to continue to senior high school partly big because on approval parents, deepen science has general, base the science has been studied at junior high school, achievable school cost by parents economy ability. 3) internal factor category that be preferensi student in choose to continue to senior high school a large part present in tall category. 4) while in external factor category that be preferensi student chooses to continue to senior high school absolut majority present in category

Peningkatan Kemampuan Berpikir Kritis dan Keterampilan Proses Sains Siswa SMA melalui Implementasi Problem Based Learning Dipadu Think Pair Share

This study aims to implement of Problem Based Learning combined Think Pair Share in order to improve critical thinking and science process skills of students at XI IPA SMA. This research was classroom action research. The subjects were 28 students of classroom XI IPA 1 SMAN 1 Kasiman Bojonegoro 2016/2017. This research was conducted in two cycles. The research data consists of the learning realized by observation, the results of the critical thinking paper and pencil tests, and the science process skills by observation. Data were analyzed by descriptive qualitative technique. The results showed that the combined PBL and TPS learning model can improve the ability of critical thinking, and science process skills students of classroom XI IPA 1 SMAN 1 Kasiman Bojonegoro.Penelitian ini bertujuan untuk menerapkan Problem Based Learning dipadu Think Pair Share dalam rangka meningkatkan kemampuan berpikir kritis dan keterampilan proses sains siswa kelas XI IPA SMA. Penelitian ini merupakan penelitian tindakan kelas. Subjek penelitian adalah siswa kelas XI IPA 1 SMAN 1 Kasiman Bojonegoro tahun pelajaran 2016/2017 dengan jumlah 28 siswa. Penelitian dilaksanakan selama dua siklus. Data penelitian terdiri atas hasil observasi keterlaksanaan pembelajaran, hasil tes tulis kemampuan berpikir kritis, dan hasil observasi keterampilan proses sains. Data dianalisis secara deskriptif kualitatif. Hasil penelitian menunjukkan bahwa model pembelajaran PBL dipadu TPS dapat meningkatkan kemampuan berpikir kritis dan keterampilan proses sains siswa kelas XI IPA 1 SMAN 1 Kasiman Bojonegoro

Identification of induction machine parameters using only no-load test measurements

Several methods have been used to estimate the parameters of induction machines. The basic method is the standard no-load and block rotor test. Although accurate results are obtained using this method; however, performing the locked rotor test is difficult, requiring full control of the voltage by using appropriate instrument to mechanically secure the rotor in the locked condition. Therefore, in this paper, a method requiring only a no-load test to extract the parameters of the induction machine is presented. The proposed method is based on the modification of the third impedance calculation of the IEEE standard 112. To validate the proposed method, parameters of a standard 7.5kW induction machine are estimated. Based on the experimental results, the maximum recorded error in the parameter estimation is less than -2.881% when compared to the reference parameters obtained from the conventional no-load and blocked rotor test.Keywords: induction motor, no-load tests, machine parameters, third impedance calculation, blocked-rotor tes