Judul: Hubungan Karakteristik Keluarga, Gender dan Peer-Group dengan Kecerdasan Musikal dan Prestasi Akademik Siswa SMA di Kota Bogor.
Abstrak: The purpose of this study was to examine the influence of family, gender, and peer-group with musical intelligence and academic achievement among high school students in Bogor.There had been selected 100 samples by proportional random sampling method. Adolescents based on gender, origin of high school, and classes had been taken purposively. The data collection included characterstic of family, characteristic of adolescents, characteristic of peer-group, time management, musical intelligence stimulation in family, extracurricular activities and academic achievement. Musical intelligence measured by filled-out a questionnaire consisted of musical arts knowledge and mastery of musical intstrument, while academic achievement measured by current academic score. Significant and positive correlation found between musical intelligence and self stimulation, musical time allocation, starting time for musical courses, number of instrument had learned, and musical stimulation in extracurricular activity. There was no relation between musical intelligence and academic achievement.
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Judul: Pengaruh Karakteristik Keluarga, Karakteristik Individu, Kecerdasan Kognitif, dan Self Regulated Learning terhadap Prestasi Akademik Remaja
Abstrak: Academic achievement affected by external and internal factors. This study generally aims to see the influence of family characteristics (income and parental education), individual characteristics (age and gender), cognitive intelligence, and self-regulated learning toward academic achievement in adolescents. A total of 91 samples had a mean age of 13.9 years with the largest percentage of the respondents were women that drawn from two differents junior high schools. Cognitive intelligence, self regulated learning, and academic achievement were measured by using RIBLS, MSLQ, and values from school record. The partial analysis showed there is negative influence of mother’s education to self regulated learning. Moreover positive influence of gender showed to cognitive intelligence. The regression analysis showed parental education and cognitive intelligence of adolescents have a positive influence to academic achievement. Meanwhile, income families, gender, and self regulated learning no significant influence to academic achievement.
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Judul: Sintesis 1-Kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai Prekursor Asam (S)-(+)-(6-Metoksi-2-naftil)propanoat
Abstrak: Senyawa 1-kloro-2-metoksi-6-propilnaftalena-1,3-dioksolana (1:1) sebagai prekursor asam (S)-(+)-(6-metoksi-2-naftil)propanoat disintesis dari bahan awal 2-metoksinaftalena. Tahapan sintesis diawali dengan klorinasi menggunakan 2 jenis pereaksi klorinasi, yakni isosianurat terklorinasi dan NaOCl. Klorinasi dengan isosianurat terklorinasi berhasil menyintesis 1-kloro-2-metoksinaftalena sebagai produk monoklorinasi melalui pencirian dengan kromatograf gas-spektrometer massa (GC-MS). Nisbah konversi produk paling efisien diperoleh pada laju penambahan 2.5 mmol/jam. Sebaliknya, klorinasi dengan NaOCl menghasilkan produk triklorinasi. 1-Kloro-2-metoksinaftalena selanjutnya diasilasi dengan propanoil klorida, tetapi analisis dengan GC menunjukkan bahwa produk asilasi tidak terbentuk. Sistem bebas-air diperlukan untuk keberhasilan proses asilasi tersebut.
Keyword: isosianurat terklorinasi, NaOCl, nisbah konversi