Judul: The Influence of Parenting Style and Friendship Quality on Aggressivity among Adolescents in Bogor City
Abstrak: Agresivitas merupakan kecenderungan yang mengarah pada tingkah laku individu dalam bentuk tindak kekerasan secara fisik atau verbal dan dilakukan dengan tujuan untuk melukai atau menyakiti orang lain. Penelitian ini bertujuan untuk menganalisis pengaruh karakteristik remaja, karakteristik keluarga, gaya pengasuhan, dan kualitas pertemanan terhadap agresivitas remaja di Kota Bogor. Penelitian berlokasi di empat SMA di Kota Bogor yang ditentukan secara purposive. Penelitian melibatkan 229 siswa yang berasal dari sekolah yang mewakili kecamatan di tengah kota dan kecamatan di pinggiran kota. Hasil uji hubungan menemukan bahwa gaya pengasuhan komposit berhubungan negatif signifikan dengan agresivitas. Dimensi kehangatan gaya pengasuhan ditemukan berhubungan dengan kualitas pertemanan komposit. Hasil uji hubungan juga menemukan bahwa dimensi konflik kualitas pertemanan berhubungan dengan agresivitas. Hasil uji pengaruh model 1 menemukan hanya gaya pengasuhan yang secara konsisten memberikan pengaruh lebih besar terhadap agresivitas remaja. Sementara itu, hasil uji pengaruh model 2 menemukan adanya pengaruh yang lebih besar dari usia ibu, dimensi permusuhan, ketidakpedulian, dan konflik terhadap agresivitas remaja dibandingkan variabel lain yang diteliti pada model regresi.
Keyword: gaya pengasuhan, kualitas pertemanan, perilaku agresif, remaja, teman  sebaya

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: Hybrid solar cells of ZnO nanoparticles/chlorophyll was modified metal ions (Zn2+ and Cu2+ )
Abstrak: Zinc Oxide (ZnO) is a n-type semiconductor with a wide the energy band (Band Gap) is 3.37 eV at room temperature and 3.34 eV at low temperature with a large exiton binding energy is 60 meV. ZnO has been synthesized by hydrothermal method, resulting in a decrease in particle size over the duration of the hydrothermal changes. Crystallographic structure of ZnO were characterized using XRD, has shown the characteristic pattern of a hexagonal wurtzite structure, the crystallite size increases to changes in particle size. Changes in particle size has also led to a change in the absorption peak of ZnO as has been demonstrated posted under test using the optical properties of UV-Vis spectrophotometer. Changes of this uptake has also led to changes in the energy band gap, which increases its band gap energy of the particle size. In electronic applications, especially in solar cells. Chlorophyll is considered less effective, because of their very nature are easily degraded as a result of several reactions which are acid, lighting and temperature. The results of the stability test using a halogen lamp 34 W/m2 for 5 hours, that the substitution of chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form more stable than natural chlorophyll. The characterization of the optical properties, the combination of ZnO / chlorophyll in the form of hybrid films has led to a shift in the absorption region of ZnO becomes more widely from the UV to Visible. ZnO/chlorophyll has absorption range of 350-515 nm, ZnO / Zn-feofitin 332-401 nm and 332-632 nm for Cu-feofitin. The combination of ZnO/chlorophyll and CuSCN as a solid electrolite in hybrid solar cell, a modified chlorophyll with metal ions Zn2+ and Cu2+ has been shown to form a more stable I-V curve. It is characterized by its fill factor value greater than natural chlorophyll. Nevertheless, solar cells with natural chlorophyll has been able to produce higher efficiency values of chlorophyll were substituted.
Keyword: Hydrothermal, ZnO/Chlorophyll modified, Hybrid Solar Cell