http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
2030 세대의 출산의도에 미치는 영향요인: 성별 차이 중심으로
이지원(Ji-Won Lee),윤성하(Seong-Ha Yun),한승엽(Seung-Yeop Han),김은지(Eun-Ji Kim),이경희(Kyung-Hee Lee) 한국보건의료윤리학회 2023 한국보건의료윤리학회지 Vol.2 No.2
Background: This study aimed to investigate the factors influencing childbirth intentions in individuals of the 2030 generation, with a focus on gender differences. The primary goal was to provide essential data for the development of policies that support childbirth. Methods: In this study, we conducted a survey on 190 individuals from the 2030 generation. After excluding three incomplete responses, we used a total of 187 datasets. The questionnaire consisted of 40 questions categorized into economic factors(9), personal factors(18), cultural factors(8), and subjective normative factors(5). General characteristics of the data were examined through frequency analysis. We conducted cross-analysis by gender to find out childbirth intentions and the preferred number of children. Gender-based differences in factors were identified using t-tests. Simple linear regression analysis was performed to find out the gender-based differences in the impact of factors on childbirth intentions. The significance level for all statistical analyses was set at p <0.05. Results: The study revealed that among the respondents, 60.4% (n=113) expressed an intention to have children, while 39.6%(n=74) did not. Specifically, 72.2% of males expressed an intention to have children, whereas only 56.1% of females did (p <0.001). When analyzing the difference in the impact on childbirth intention, there was a statistically significant difference between men 2.92(±0.70) and women 3.43(±0.48)(p <.01). When analyzing the differences in the impact of each factor on childbirth intention, for men, economic factors (+), personal factors(emotion) and subjective normative factors had a negative (-) influence (p <.001), and for women, personal factors(physical, emotion) and subjective normative factors had a negative (-) influence(p <.05). Conclusion: It was found that women in the 2030 generation had lower intentions of childbirth than men, and women also had more factors affecting childbirth intention than men and were greatly affected. Therefore, this study proposes that the childbirth promotion policy requires detailed policies divided by gender.
OFDM시스템에서 국부발진기의 위상잡음과 BER특성분석
윤성하,이영철 慶南大學校 附設 工業技術硏究所 2003 硏究論文集 Vol.21 No.1
본 논문에서는 5㎓대역의 무선랜에서 이용되는 OFDM시스템에서 국부발진기의 위상잡음과BER 관계를 분석하였다. 국부발진기로 사용되는 위상동기 발진기의 모델링을 통해 전체 위상잡음과 변조신호에 따른 BER특성을 규명하였으며 실험결과 5㎓대역의 국부발진기에 대하여 전체 위상잡음 특성이 -105㏈c@10KHz의 특성을 나타내었다. BER을 10^-4을 기준으로 했을 경우 QPSK방식은 분산값에 따라 0.7㏈. 16QAM방식은 2.7㏈의 성능차이를 나타내었다. In this paper, we analyzed phase noise and BER of local oscillator in the OFDM systems for high-speed WLAN. Through the modelling of phase locked oscillator for local oscillation, we analyzed the total phase noise and BER property according to digital modulation signal. For local oscillator in 5㎓ band, the total phase noise of PLO is -105㏈c/㎐ at 10KHz offset frequency. It can be shown that there are power loss of about 0.7㏈ in QPSK scheme and about 2.7㏈ in 16QAM scheme.