DEVELOPMENT OF AN ANDROID APPLICATION IN THE FORM OF A SIMULATION LAB TO EXPLAIN PROPERTIES OF AN IDEAL GAS

The aim of this research is to create a learning media that can explain the properties of an ideal gas through a simulation lab in the form of an android application. The method used in the study is research and development. A simulation lab android application which has been made subsequently validated by concept and media experts, further empirical testing by teachers and students. Assessments of the product is done by filling in questionnaires and rated by rating scale. Averages for feasibility of the media on all indicators are 83.13% from media experts, 87.5% from concept experts, 83.13% from empirical test of teachers, and 78.51% from student test. It is concluded that the android application in the form of a simulation lab can be used as a learning media to explain the properties of an ideal ga

Pemanfaatan Energi Panas Matahari Pada Batu Andesit Terhadap Thermoelectric Cooler Tipe 12706

Thermoelectric cooler (TEC) merupakan komponen penghasil listrik alternatif yang erat kaitannya dengan pemanfaatan panas atau kalor untuk menghasilkan energi listrik. Modul TEC memanfaatkan perbedaan suhu untuk menghasilkan energi listrik. Penelitian ini bertujuan untuk mengetahui potensi pemanfaatan energi panas matahari pada batu andesit terhadap thermoelectric cooler tipe 12706 sebagai alternatif penghasil energi listrik tenaga surya. Metode penelitian yang digunakan adalah metode eksperimen laboratorium. Pegujian ini dilakukan untuk mengetahui nilai arus dan tegangan yang dihasilkan TEC1-12706. Hasil penelitian ini menunjukkan bahwa media batu andesit dapat dimanfaatkan sebagai media untuk menyimpan panas, sehingga TEC dapat dibangkitkan menghasilkan listrik. Data yang peneliti peroleh ialah terdapat 3 hasil pengujian yaitu, pegujian TEC tanpa beban, pegujian TEC dengan beban resistor 100 ohm dan pengujian TEC dengan beban 250 ohm. Dari ketiga data pengujian tersebut bahwa perbedaan suhu dan tegangan yang dihasilkan TEC lebih optimal pada pengujian TEC tanpa beban yaitu menghasilkan tegangan sebesar 175 mV dan perbedaan suhu 8,1 °C selama penyinaran 30 menit

Hubungan Antara Aktivitas Menonton Tayangan Televisi Dan Intensitas Bimbingan Orang Tua Dengan Prestasi Belajar Sosiologi Siswa SMA N 1 Bantul Tahun Pelajaran 2012/ 2013

The objective of research was to find out the significant relationship of: (1) television show watching activity to learning achievement, (2) parent guidance intensity to learning achievement, and (3) television show watching activity and parent guidance intensity to learning achievement in the X graders of SMA N 1 Bantul in the school year of 2012/2013. This study employed a quantitative method with statistic analysis. The population of research was all of the X graders of SMA Negeri 1 Bantul consisting of 192 students. The sample was taken using random sampling. The size of sample for instrument tryout consisted of 17 students, selected randomly, and the sample of research consisted of 49 students. Technique of collecting data used for X1, X2, and Y variables was questionnaire, while the data analysis was conducted using a statistic descriptive analysis and product moment correlation with SPSS program for windows help. Considering the result of research, it could be found (1) the activity of watching television show related with the learning achievement with rX1Y = 0.0149, and P = 0.30, so that the relationship of activity of watching television show to learning achievement of the X graders of SMA N 1 Bantul was not significant. (2) The parent guidance intensity related with the learning achievement with rX2Y = 0.285, and P = 0.045, so that the relationship of parent guidance intensity to learning achievement of the X graders of SMA N 1 Bantul was significant. (3) The relationship of television show watching activity and parent guidance intensity to learning achievement yielded r X1X2Y = 0.339, and P = 0.060, so that the relationship of television show watching activity and parent guidance intensity to learning achievement in the X graders of SMA N 1 Bantul was significant