Judul: Kasus: Mahasiswa Perguruan Tinggi Negeri Di Kabupaten Bogor, Jawa Barat
Abstrak: Now day, internet game industry or as we know as game online has growth faster of its. It can connect one people in one area to each other without distance limit. Online games put gamer to prefer communicate virtually than direct communication. The research objectives are to observe gamer’s characteristics and behavior. The observational data acquired from 30 respondents of IPB students, with snowball sampling and purposive sampling. The results of this research are; gamers majority were male gamers, gamers generally plays at game center, gamers had average GPA of 2.51 to 2.75 or above, and play game online for about 22 hours to more than 48 hours in one week. The gamer’s behavior was seen from the pattern of playing games, the pattern of taking care of theirselves and the pattern of the social interaction that tended low when they began to experience addiction, the pattern of the behavior that tended to neglect. Based on the characteristics and the behavior of gamers there’s four typologies that were stratified from non-addicted to high-level addicted. The indicators of addiction based on previous researches began to emerge when gamers was in the type of advanced gamers and hyper gamers or could be said for them that played game online more than 34 hours in one week.
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Judul: Pengaruh gaya pengasuhan dan hubungan peer group dengan perilaku game online pada siswa SMK
Abstrak: Perilaku kecanduan game online di kalangan remaja berdampak negatif terhadap aspek-aspek kehidupan pada remaja. Penelitian ini bertujuan untuk mengetahui pengaruh gaya pengasuhan dan hubungan peer group terhadap perilaku kecanduan game online di Kota Bogor. Contoh dalam penelitian adalah siswa kelas X dan XI SMK X yang bermain game online diatas 5 jam per hari. Pengambilan contoh menggunakan metode purposive sampling sebanyak 72 orang dari 100 remaja di SMK yang disurvei. Hasil penelitian menunjukkan lebih dari setengah (52,77%) ayah menerapkan gaya pengasuhan otoriter, sedangkan sebanyak kurang dari setengah (40,27%) ibu menerapkan gaya pengasuhan permisif. Hubungan peer group dengan remaja berada pada kategori tinggi. Sebanyak 56.7 persen remaja mengaku lebih suka menghabiskan waktu bersama teman. Remaja dengan perilaku kecanduan game online sebanyak 52.8 persen bermain selama 6-7 jam per hari. Hasil uji regresi menunjukkan uang saku, lama pendidikan ibu dan kebersamaan dengan teman berpengaruh negatif signifikan terhadap perilaku kecanduan game online, sedangkan gaya pengasuhan otoriter ayah dan gaya pengasuhan permisif ibu berpengaruh positif terhadap perilaku kecanduan game online
Keyword: Addiction, Online Game, Parenting Style, Peer group, Delinquency

Judul: Penentuan Kondisi Proses Pemisahan Sitronelal dan Rhodinol dari Minyak Sereh Wangi dengan Distilasi Fraksinasi Vakum
Abstrak: Minyak sereh wangi merupakan salah satu minyak atsiri yang memiliki komponen utama sitronelal dan rhodinol. Komponen utama tersebut dapat dipisahkan dengan metode distilasi fraksinasi. Proses distilasi fraksinasi dengan alat dan kondisi proses berbeda berpengaruh terhadap proses pemisahan fraksi minyak sereh wangi. Oleh karena itu, perlu diketahui pengaruh suhu dan rasio refluks pada proses pemisahan sitronelal dan rhodinol minyak sereh wangi dari unit distilasi fraksinasi vakum kapasitas 7L yang telah di desain dengan spesifikasi tertentu. Proses pemisahan dilakukan pada tekanan 60 mmHg dengan umpan 5L dan dilanjutkan proses redistilasi fraksi kaya sitronelal dan rhodinol. Fraksi sitronelal dan rhodinol yang dihasilkan dilakukan analisis GC-MS untuk mengetahui konsentrasi masing-masing fraksi. Variasi refluks yang digunakan pada pemisahan sitronelal yaitu 12:4, 6:4, 6:2 dan 10:10. Suhu dan rasio refluks berpengaruh terhadap kemurnian fraksi. Kemurnian fraksi sitronelal tertinggi yang dihasilkan yaitu sebesar 50,55% dan fraksi rhodinol sebesar 37,09% pada rasio refluks 6:4. Proses redistilasi fraksi kaya sitronelal dan rhodinol menghasilkan konsentrasi senyawa sitronelal sebesar 42,72% dan senyawa rhodinol sebesar 32,51% dengan rasio refluks 10:10. Kemurnian sitronelal meningkat dan waktu proses lebih singkat dikarenakan pada suhu dan rasio refluks yang digunakan, alat bekerja lebih baik sehingga menghasilkan kemurnian lebih tinggi. Kata kunci: distilasi fraksinasi vakum, minyak sereh wangi, refluks, rhodinol, sitronelal, Citronella oil is one of the essential oils that has the main components of citronellal and rhodinol. The main components can be separated by fractional distillation method. Fractional distillation process with different tools and process conditions affect the separation process of citronella oil fraction. Therefore, it is necessary to know the effect of temperature and reflux ratio on the separation process of citronellal and rhodinol of citronella oil from a 7L capacity vacuum fractionation distillation unit which has been designed with certain specifications. The separation process was carried out at a pressure of 60 mmHg with 5L feed and continued with the redistillation process of the citronellal and rhodinol-rich fractions. The resulting citronellal and rhodinol fractions were analyzed by GC-MS to determine the concentration of each fraction. Reflux variations used in citronellal separation are 12:4, 6:4, 6:2 and 10:10. Temperature and reflux ratio affect the purity of the fraction. The highest purity of the citronellal fraction produced was 50.55% and the rhodinol fraction was 37.09% at a reflux ratio of 6:4. The redistillation process of citronellal and rhodinol-rich fractions resulted in a concentration of citronellal compounds of 42.72% and rhodinol compounds of 32.51% with a reflux ratio of 10:10. The purity of citronellal is increased and the processing time is shorter because at the temperature and reflux ratio used, the tool works better resulting in higher purity. Keywords: citronella oil, citronellal, rhodinol, reflux, vacuum fractional distillation
Keyword: distilasi fraksinasi vakum, minyak sereh wangi, refluks, rhodinol, sitronelal