Efektivitas Model Discovery Learning dalam Meningkatkan Hasil Belajar Peserta Didik Kelas X MIPA SMA Negeri 10 Pinrang (Studi pada Materi Pokok Reaksi Reduksi Oksidasi)

Penelitian ini merupakan penelitian pra eksperimen yang bertujuan untuk mengetahui apakah model discovery learning efektif terhadap peningkatan hasil belajar peserta didik kelas X MIPA SMA Negeri 10 Pinrang (materi pokok reaksi redoks). Desain penelitian yang digunakan adalah one group pretest-posttest design. Populasi dalam penelitian ini adalah peserta didik Kelas X MIPA SMA Negeri 10 Pinrang yang terdiri dari tiga kelas. Teknik pengambilan sampel dilakukan secara random sampling. Sampel pada penelitian ini adalah kelas X MIPA 2 yang berjumlah 30 peserta didik. Pengambilan data dilakukan dengan menggunakan tes hasil belajar berupa pretest dan posttest. Hasil analisis deskriptif menunjukkan peningkatan hasil belajar dari rata-rata sebelum perlakuan yaitu 46 meningkat menjadi 71 dengan rata-rata gain ternormalisasi 0,67 yang artinya peningkatan hasil belajar peserta didik kelas X MIPA SMA Negeri 10 Pinrang setelah menggunakan model discovery learning berada pada kategori sedang. Hasil pengujian hipotesis menggunakan uji-t satu sampel diperoleh thitung = 4,152 lebih besar dari ttabel = 1.699 pada taraf signifikan α = 0,05. Berdasarkan data tersebut, disimpulkan bahwa penggunaan model discovery learning efektif terhadap peningkatan hasil belajar peserta didik kelas X MIPA SMA Negeri 10 Pinrang (materi pokok reaksi redoks)

Infrared and kinematic properties of the substellar object G 196-3B

We report unusual near- and mid-infrared photometric properties of G 196-3 B, the young substellar companion at 16 arcsec from the active M2.5-type star G 196-3 A, using data taken with the IRAC and MIPS instruments onboard Spitzer. G 196-3 B shows markedly redder colors at all wavelengths from 1.6 up to 24 micron than expected for its spectral type, which is determined at L3 from optical and near-infrared spectra. We discuss various physical scenarios to account for its reddish nature, and conclude that a low-gravity atmosphere with enshrouded upper atmospheric layers and/or a warm dusty disk/envelope provides the most likely explanations, the two of them consistent with an age in the interval 20-300 Myr. We also present new and accurate separate proper motion measurements for G 196-3 A and B confirming that both objects are gravitationally linked and share the same motion within a few mas/yr. After integration of the combined spectrophotometric spectral energy distributions, we obtain that the difference in the bolometric magnitudes of G 196-3 A and B is 6.15 +/- 0.10 mag. Kinematic consideration of the Galactic space motions of the system for distances in the interval 15-30 pc suggests that the pair is a likely member of the Local Association, and that it lay near the past positions of young star clusters like alpha Persei less than 85 Myr ago, where the binary might have originated. At these young ages, the mass of G 196-3 B would be in the range 12-25 Mjup, close to the frontier between planets and brown dwarfs.Comment: Accepted for publication in ApJ

Doctoral thesis recital (guitar)

Sonata in D minor, K. 213 ; Sonata in G major, K. 14 / Domenico Scarlatti -- Fantasia no. 30 / Francesco da Milano -- Sonata eroica : op. 150 / Mauro Giuliani -- The swan / John Duarte -- Partita no. 1 for guitar / Stephen Dodgson -- Aire vasco : op. 19 / Antonio Jiménez Manjón -- Fantasia sevillana : op. 29 / Joaquin Turina.Musi

Doctoral thesis recital (guitar) chamber

String sextet no. 1, op. 18. II., Andante ma moderato / Johannes Brahms -- Sonata for viola and guitar. I., Molto moderato ; II., Andante cantabile / Ferdinand Rebay -- Sonata in F minor minor ; Georg Philipp Telemann -- Suite Buenos Aires / Máximo Diego Pujol. (With (variously): Sarah Au, horn ; Randel Leung, clarinet ; Clara Li, viola ; Matthew Gillen, guitar)Musi

Doctoral thesis recital (guitar (lecture))

[Music of the Afro-British composer Samuel Taylor-Coleridge and the African American composer Edmond Dédé, arranged for guitar ensemble]Musi

Doctoral thesis recital (guitar)

Three folksongs. Canço del lladre (Song of the thief) / arr. Miguel Llobet ; Por ti mi corazon (For you, my heart) / arr. Manuel Ponce ; Loch Lomond / arr. David Russell -- Hommage à Tárrega : op. 69 / Joaquin Turina -- Hilka : in memoriam Toru Takemitsu / Leo Brouwer -- Elegy / Johann Kaspar Mertz -- Fandanguillo : op. 36 / Joaquin Turina -- Farewell / Sergio Assad -- La muerte del ángel / Astor Piazzolla.Musi

Big Talk, 1/12/2012

Suzanne Murphy talks with Don Tuski, president of the Maine College of Art, about the abundant creativity to be found in Portland.https://digitalcommons.usm.maine.edu/wmpg_bigtalk/1083/thumbnail.jp