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김보배,노은경,박서영,박영,오승희,전영란,차현진,윤희상,김수지,이자형 이화여자대학교 간호과학대학 2004 이화간호학회지 Vol.- No.38
This study surveyed and analyzed comparatively college students-knowledge' attitude, was to cultivate the right knowledge and attitude on sex, and serve the foundational data for the suitable sex education. The purpose of the study was to identify and examine: 1) students; sexual knowledge and sexual attitude; 2) the differences between variables of gender, age, and self-perceived sexual knowledge in relation to sexual knowledge and sexual attitude; and 3) the relationship between sexual knowledge and sexual attitude. For this study the questionaires were given to 300 students from five different universities located seoul areas. the questionaires were collected Jenuary 8th to 15th in 2004. Two hundred and nigty one samples were analyzed for the study. The adapted SKAT(saxual knowledge & attitude test; Lief & Reed, 1986) was used to determine sexual knowledge and the students' sexual attitude. Collected data were analyzed statistically by means of percentage, t-test, ANOVA test, and pearson correlation analysis with SPSS 12.0 package program. The main results of this analysis are as follows: Participants consisted of male(48.1%) and female(51.9%) which were mainly between the ages of 21.25(71.8%) with an age range of 19 to 30. Knowledge of sexual disease was scored highest of 92.4%, and konwledge of the knowledge of the male and female's anatomy was the lowest at 60.9%. The respondents' level of sexual attitude was tolerant as on average 3.66(on the basis of 5) Relating to the items, the respondents' score of the sexual curiosity was 4.16, sexual behavior 3.85, self-consolation 3.81, aborthon 3.23, virgine 3.19, extramarital experiences 3.17. There were no significant differences in sexual knowledge between male and females, between younger and older students, residence, sexual experience, and how students mainly obtained their sexual knowledge. But a significant difference was also found religion in their sexual attitude(p<.005). In addition, results showed the relationship between sexual knowledge and sexual attitude(P=0.332).
Photoconductivity and enhanced memory effects in hybrid C<sub>60</sub>–graphene transistors
Jeon, Eun-Kyoung,Yang, Cheol-Soo,Shen, Yanfei,Nakanishi, Takashi,Jeong, Dae-sung,Kim, Ju-Jin,Ahn, Ki-suk,Kong, Ki-jeong,Lee, Jeong-O IOP Pub 2012 Nanotechnology Vol.23 No.45
<P>We describe the observation of photoconductivity and enhanced memory effects in graphene devices functionalized with clusters of alkylated C<SUB>60</SUB> molecules. The alkylated C<SUB>60</SUB> clusters were adsorbed on chemical vapor deposition-grown graphene devices from an aprotic medium. The resulting alkylated C<SUB>60</SUB>–graphene hybrid devices showed reproducible photoconductive behavior originating from the electron-accepting nature of the C<SUB>60</SUB> molecules. Significantly enhanced gate hysteresis was observed upon illumination with visible light, thereby enabling the use of C<SUB>60</SUB>–graphene hybrid devices in three-terminal photo-memory applications. </P>
Jeon, Eun-Kyoung,Seo, Hyunsang,Ahn, Chi Won,Seong, Hankyu,Choi, Heon Jin,Kim, Ju-Jin,Kong, Ki-jeong,Buh, Gyoungho,Chang, Hyunju,Lee, Jeong-O IOP Pub 2009 Nanotechnology Vol.20 No.11
<P>We have fabricated Si<SUB>1−<I>x</I></SUB>Ge<SUB><I>x</I></SUB> alloy nanowire devices with Ni and Ni/Au electrodes. The electrical transport characteristics of the alloy nanowires depended strongly on the annealing temperature and contact metals. Ni/Au-contacted devices annealed at 400 °C showed p-type transistor behavior as well as a resistance switching effect, while no switching was observed from Ni-contacted alloy nanowire devices. To identify the origin of such a hysteretic resistance switching effect, we constructed nanowire devices on a 40 nm Si<SUB>3</SUB>N<SUB>4</SUB> membrane. Transmission electron microscopy analysis combined with electrical transport measurements revealed that devices contacted with Ni/Au, and thereby showing resistance switching, have Au atoms right next to the alloy nanowire. </P>