Judul: Analisis faktor-faktor yang berpengaruh terhadap sikap dan perilaku membeli buku bajakan pada mahasiswa IPB
Abstrak: The aim of research is to analyse factors which influence IPB students attitudes and buying behaviour of piracy book. Research methode using cross sectional study design. Data aggregation along Mei 2009. Data was taken from 200 sample girls and boys with equilibrate. The way of taking out sample from every faculty appropiete with proportional sampling. Obtainable data is primery data and secondary data. Tabulation and analysis data by description and statistic test (mann withney/ T test, double linier regression with backward method and logistic regression test with entered method). Almost samples are readed book and mostly they buy a book for the last three months. Almost of them is had knowledge with average value. For the samples attitude that quite netral about book piracy. Their basic reason that piracy book is cheaper than the original. From the result can show the factors that influencing attitude concerning book piracy is amount of ages, allocation of money, information resources, and knowledge. The factor that influencing behavior buying of piracy book is attitude.
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Judul: Motivasi, sikap, dan perilaku membaca ebook mahasiswa program S1 IPB
Abstrak: This study aimed to analyze the motivation, attitude, and reading behavior of electronic-book (ebook) among undergraduate students at Bogor Agricultural University. This research involved 100 undergraduate students from each faculty who were selected conveniencely. Data was collected through the questionaire. The result showed that the samples have a high level of motivation to use ebook and agree use ebook because attributes of price, gateway to access, type of book, content, and simpleness. Samples have a positive attitude toward attributes of ebook. The frequency of reading samples is once a week with duration of reading is 1-2 hours. The result showed there is a positive significant correlation between age and length of study within motivation and attitude, as well as motivation and frequency. On the other side, the negative correlation between Grade Point Average and attitude toward an ebook. Moreover, there is a positive and very significant correlation between motivation and attitude toward duration of reading an ebook.
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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