Judul: The Influence of Parental Attachment and Friendship Quality on Adolescents Character in Bogor City.
Abstrak: Karakter yang terbentuk pada diri seseorang dipengaruhi oleh berbagai aspek baik dari dalam maupun dari luar diri seseorang. Keluarga dan teman sebaya merupakan lingkungan terdekat bagi seorang remaja yang memengaruhi pembentukan karakternya, salah satunya melalui kelekatan yang diberikan orang tua dan kualitas pertemanan yang dimiliki oleh remaja. Penelitian ini bertujuan untuk menganalisis pengaruh kelekatan orang tua dan kualitas pertemanan terhadap karakter remaja di Kota Bogor. Penelitian ini menggunakan metode purposive sampling dengan melibatkan 229 responden yang merupakan siswa SMA dari empat sekolah di Kota Bogor yang masing-masing terdiri dari dua sekolah di Kecamatan Bogor Tengah dan di Kecamatan Bogor Selatan. Responden pada penelitian ini didominasi oleh siswa perempuan dengan persentase sebesar 60,7 persen, sedangkan responden laki-laki sebesar 39,3 persen. Hasil penelitian menemukan adanya hubungan antara kualitas pertemanan dengan karakter yang dimiliki remaja dan secara konsisten, peningkatan kualitas pertemanan memengaruhi peningkatan karakter. Sementara itu, pada kelekatan orang tua tidak ditemukan adanya hubungan dan pengaruh terhadap karakter remaja di Kota Bogor., The character that is formed in a person is influenced by various aspects both from within and from outside a person. Family and peers are the closest environment for a teenager that influences the formation of his character, one of which is through the attachment provided by parents and the quality of friendship owned by adolescents. This study aims to analyze the influence of parental attachment and friendship quality on the adolescent character in Bogor City. This study used a purposive sampling method involving 229 high school respondents from four schools in Bogor City, each consisting of two schools in Central Bogor Subdistrict and South Bogor Subdistrict. Respondents in this study were dominated by female students with a percentage of 60.7 percent, while male respondents amounted to 39.3 percent. The results found that there was a relationship between the quality of friendship and character possessed by adolescents and consistently, an increase in the quality of friendship influenced the improvement of character. Meanwhile, on parental attachment, there was no relationship and influence on the character of adolescents in Bogor City.
Keyword: Adolescents, Character, City, Friendship quality, Parental attachment

Judul: Pengaruh metode sosialisasi dan kelekatan ibu terhadap karakter remaja di kelurahan Situ Gede Kota Bogor
Abstrak: tua dalam mensosialisasikan nilai kebaikan. Penelitian ini menggunakan desain cross sectional study dan bertujuan untuk menganalisis pengaruh metode sosialisasi dan kelekatan ibu terhadap karakter remaja. Kerangka contoh penelitian adalah keluarga utuh dengan anak pertama usia remaja (13-15 tahun) yang tinggal di Kelurahan Situ Gede, Kecamatan Bogor Barat, Kota Bogor. Contoh diambil sebanyak 50 keluarga secara purposive untuk dilakukan wawancara terhadap ibu dan anak. Hasil uji hubungan menunjukkan bahwa semakin baik metode observational yang disosialisasikan ibu dan semakin tingginya kelekatan ibu maka semakin baik pula karakter remaja. Hasil uji pengaruh menunjukkan bahwa hanya kelekatan ibu yang memiliki pengaruh nyata terhadap karakter remaja dalam model., The decreasing values of character among teenagers can be caused by the role of parents to socialize values of kindness. This study used cross-sectional design and aimed to analyze the influence of socialization methods and mother’s attachment on characters among teenagers. Sample frames of this research were families with first child as teenagers (13-15 years) who has been lived in the Situ Gede Village, Sub District West Bogor, Bogor City. This research involved 50 samples that taken purposively and interviewed by using questionnaire. The correlation result showed significantly that the better the method of observational and the higher mother’s attachment, it was likely the better character of teenagers. Regression analysis showed that only mother’s attachment that had significant influence on character of teenagers in the model
Keyword: karakter remaja, kelekatan ibu, metode sosialisasi

Judul: Rancang Bangun Elemen Pemanas Bahan Bakar Minyak Nyamplung Untuk Motor Bakar Diesel dengan Memanfaatkan Panas Gas Buang
Abstrak: Tamanu oil is one of biosolar substituter as diesel engine fuel. High viscosity of tamanu oil becomes main obstacle in direct using of tamanu oil as diesel engine fuel. Heater element is made to decrease tamanu oil viscosity. Heater element is benefitted high temperature of diesel engine exhaust gas as reheating source. Optimum temperature which is needed to reduce tamanu oil viscosity of 3-5 cSt is 110 Celcius degree (biosolar viscosity of 30oC is 5-7 cSt). IV design of element heater has optimum tamanu oil reheating. There are four kind of tamanu oil that has different treatment. degumming neutralization (N4) tamanu oil has best quality with the lowest viscosity of 30cSt in 30oC. Tamanu oil (N4) usage as fuel occur reduction power of 12.26 %, torsion of 9.59 %, power maximum of diesel engine is 5.39 kW and maximum torsion of 123.74 Nm. Maximum power of diesel engine using biosolar is 5.99 kW and maximum torsion of 144.53 Nm. But then, tamanu oil can replace biosolar (fossil energy), without made as biodiesel first and mixed with biosolar.
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