Judul: Hubungan Terpaan Media Televisi dengan Belajar Kognitif pada Anak (Kasus SDN 04 Dramaga, Bogor Jawa Barat)
Abstrak: This research was conducted in SDN 04 DRAMAGA Bogor, West Java. Method that was used to determine the respondents was Startified Random Sampling. Method used to analyze the data is average scores and Structural Equation Modeling (SEM). The average score was used to describe the individual characteristics, sosial environment, psychological factors, exposure to television and cognitive learning in children. SEM was used to determine the relationship between individual characteristics and sosial environment with television exposure and the relationship between sosial environment, psychological factors and exposure to the medium of television with the child’s cognitive learning. In this study, the medium of television exposure in children is high but low cognitive learning. There was a significant relationship (p <0,05) between individual characteristics and sosial environment with television exposure in children. There is also a significant relationship (p <0,05) between sosial environment and exposure to the medium of television with the child's cognitive learning. In reversal, there was not any significant relationship (p <0,05) between the cognitive psychology factors to learning in children. Keywords: television, children, media exposure
Keyword: 

Judul: Kasus Smp Tamansiswa, Jakarta Pusat
Abstrak: Criminal News on TV could influence audiences and had made changed in many aspects such as cognitive, affective, and behavioral. This research only confine on cognitive and affective. The objective to know audience’s exposure of criminal news on TV, to identify the factors which related with audience’s exposure of criminal news on TV, to identify cognitive effect and affective that will be confine in adolescent as consequence of the audience’s exposure of criminal news on TV, and analyze relationship between audience’s exposure of criminal news on TV and cognitive effect and affective that will be confine in adolescent as consequence of the audience’s exposure of criminal news on TV. The research held on SMP Tamansiswa, Jl Garuda No.25, Kebayoran, Jakarta Pusat, on Mei 2009. Population are adolescent who is student, 13rd and 14th years old include eight grade of junior high school. Sample (58 subjects) was selected by cluster random sampling method. The results showed that 1) subjects didn’t have preference with kind of criminal news that they were watched on TV. They watched criminal news on TV frequently (<5 times for a week) with sufficient duration (<15 minutes; 15-25 minutes). (2) Audience’s exposure of criminal news on TV didn’t relate with Personal Characteristics (age, gender, and achievement of academic), but only motive for watching was proofed related with kind of criminal news. Social characteristic that was related with audience’s exposure of criminal news on TV is occupation of mother. (3) Criminal news on TV causes effect in audiences at medium level on cognitive and affective aspects with balance proportion. (4) Exposure of criminal news on TV in adolescent didn’t relate with cognitive aspect, but it has relationship with affective aspect. There were relationship among frequency for watching and violence of tolerant.
Keyword: 

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
Keyword: