• 여성건강간호학회지
• /
• 제24권1호
• /
• pp.14-23
• /
• 2018

Purpose: To determine the effect of sex communication with friends and sexual double standard on contraceptive self-efficacy among university students. Methods: With a survey design, data were collected from 251 university students from three universities in G city from September 2016 to October 2016. Data were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation coefficient, and stepwise multiple regression. Results: Sex communication with friends, sexual double standard, and contraceptive self-efficacy scores of participants were $58.82{\pm}8.78$, $21.73{\pm}6.00$, and $44.20{\pm}5.91$, respectively. Sex communication with friends and sexual double standard were related to contraceptive self-efficacy. Sexual double standard, sex communication with friends, female, contraceptive education, and contraceptive experience explained 33% of contraceptive self-efficacy of participants. Conclusion: Sexual double standard and sex communication with friends were influencing factors of contraceptive self-efficacy. To improve contraceptive self-efficacy of university students, a program is needed to eliminate sexual double standard and improve sex communication with friends among university students in Korea.

• Nuclear Engineering and Technology
• /
• 제55권2호
• /
• pp.749-755
• /
• 2023

A new approximation method was proposed for treating the non-resonant spatial self-shielding effects of double heterogeneous region such as the double heterogeneous effect of VHTR fuel compact in the thermal energy range and that of BP compact with BISO. The method was developed based on the effective homogenization method and a spherical unit cell model with explicit coated layers and a matrix layer. The self-shielding factor was derived from the relation between the collision probabilities for a double heterogeneous compact and the effective cross section for the homogenized compact. First, the collision probabilities and transmission probabilities for all layers of the spherical model were calculated using conventional collision probability solver. Then, the effective cross section for the homogenized sphere cell representing the homogenized compact was obtained from the transmission probability calculated using the probability density function of a chord length. The verification calculations revealed that the proposed method can predict the self-shielding factor with a maximum error of 2.3% and the double heterogeneous effect with a maximum error of 200 pcm in the typical VHTR problems with various packing fractions and BP compact sizes.

• 대한가정학회지
• /
• 제44권6호
• /
• pp.47-58
• /
• 2006

This research focused on the family stress and family strengths in double-income couples. The subjects of this study were 171 double-income couples, in the Kyeongnam Area, Korea. The major findings from the study are as follows. 1) The degree of family stress of the husband and wife in double-income couples was 2.90 and 2.97, respectively, on a scale of 0-5.0. The significant variables were economic level, self-esteem and marital satisfaction in double-income couples' husband, and having a housework-helper, job satisfaction, self-esteem and marital satisfaction in double-income couples' wife. 2) The degree of family strengths of the husband and wife in double-income couples was 3.84 and 3.82, respectively, on a scale of 0-5.0. The significant variables were job satisfaction, self-esteem and marital satisfaction in double-income couples' husband, and the educational level, job type, self-esteem and marital satisfaction in double-income couples' wife. 3) There was a close inverse correlation between the lamely stress and family strengths in the husband and wife of double-income couples.

• 여성건강간호학회지
• /
• 제25권2호
• /
• pp.169-181
• /
• 2019

Purpose: To determine association of contraceptive knowledge, sexual double standard, and contraceptive self-efficacy among unmarried women in their 30s and 40s. Methods: With a survey design, data were collected from 119 unmarried women in their 30s and 40s in G city of Korea from September 2017 to March 2018. Data were analyzed by descriptive statistics, independent t-test, one-way ANOVA, $Scheff{\acute{e}}$ test, Pearson's correlation coefficients, and stepwise multiple regression. Results: Contraceptive knowledge, sexual double standard, and contraceptive self-efficacy scores of participants were $8.97{\pm}2.22$, $18.54{\pm}5.57$, and $45.84{\pm}6.90$, respectively. Contraceptive self-efficacy was negatively correlated with sexual double standard. Factors influencing contraceptive self-efficacy were sexual double standard (${\beta}=-.26$, p=.003), existence of boyfriend (${\beta}=.25$, p=.004), and contraceptive education need for adults (${\beta}=.17$, p=.044). They explained 19% of contraceptive self-efficacy of participants. Conclusion: To increase contraceptive self-efficacy of unmarried women in their 30s and 40s, lowering sexual double standard and developing customized contraceptive education according to age and knowledge level are needed. Research on factors related to contraceptive self-efficacy of unmarried women in their 30s and 40s from various regions are also needed in the future.

• 한국게임학회 논문지
• /
• 제19권4호
• /
• pp.49-64
• /
• 2019

본 연구는 세 가지 유형의 이중랜덤박스를 비교하여 살피고, 각각의 이중랜덤박스의 특징과 구조를 실제 게임 사례 중심으로 분석하였다. 유형은 1) 이중 마일리지 가챠, 2) 이중 기간한정 가챠, 3) 콤프 가챠로 분류된다. 연구의 결과 도출된 이중랜덤박스의 특징은 1) 다양한 종류의 가챠를 복합적으로 설계하는 경향이 있으며, 2) 최종 보상물은 게임에서 얻기 어렵거나, 게임상점에서 판매하지 않는다는 것이다. 해당 특징들로 말미암아 이중랜덤박스는 사행성이 있는 판매 전략이 될 수 있었으며, 본 연구에서는 이를 해결하기 위해 효과적인 자율 규제안의 재적용, 모니터링단의 전문성 강화, 게임사의 자발적 자정 노력이 필요함을 제언하였다.

• 대한전자공학회:학술대회논문집
• /
• 대한전자공학회 2006년도 하계종합학술대회
• /
• pp.491-492
• /
• 2006

The MMIC (Microwave Monolithic Integrated Circuit) self oscillating double conversion mixer was designed and fabricated for the V-band transmitter applications. The MMIC self oscillating double conversion mixer which dose not need external local oscillator was designed using GaAs PHEMT technology. The first self oscillating mixer use PHEMT technology. The first self oscillating mixer use PHEMT for $f_{LO}$ signal generation and $f_{IF}$ signal is applied at gate port and $f_{RF1}$ signal is generated at a drain port of first stage. The second gate mixer use PHEMT for $f_{LO}$ signal and $f_{RF1}$ signal is applied at gate port and $f_{RF2}$ signal is output at a drain port of second stage.

• 디지털융복합연구
• /
• 제19권4호
• /
• pp.177-183
• /
• 2021

본 연구는 가족건강성과 자아존중감 간의 관계에서 대인관계능력과 자기효능감의 이중매개효과를 분석하는데 연구의 목적을 두었다. 이를 위하여 충청북도 C시와 전라북도 J시 대학교에서 편의표집한 340명을 대상으로 설문을 2019년 11월 1개월간 실시하였고, 분석은 SPSS Win. 25와 SPSS PROCESS Macro를 활용하였다. 적용된 통계기법은 평균비교분석(t-test, One-ANOVA), 상관관계분석, 그리고 PROCESS Macro 모델 6번을 활용한 이중매개효과분석이었다. 주요 연구 결과는 첫째, 자아존중감은 교육계열 전공 대학생들이 다른 전공계열보다 유의미하게 높았다. 둘째, 상관분석 결과 자아존중감은 가족건강성, 대인관계능력 및 자기효능감과 유의미한 정적 상관관계를 보였다. 셋째, 이중매개효과분석 결과 대인관계능력과 자기효능감이 가족건강성과 자아존중감과의 관계에서 이중 매개하였다. 이 연구의 결과는 대인관계능력과 자기효능감을 활용하여 대학생의 자아존중감을 증진시키기 위한 기초자료로 활용될 수 있을 것이다.

• 대한가정학회지
• /
• 제37권10호
• /
• pp.107-122
• /
• 1999

Based on the theoretical framework of the Double ABCX model of family stress and adaptation, this study was to analysis the causal relationships of stressors (psychological sexual, and physical wife abuse), personal resources (self-efficacy and self-esteem) and social support(emotional and informational support), appraisal(positive appraisal and downward comparisons) with adaptation (psychological well-being and somatic symptoms). Self-administered questionnaire method was used to collect data from 264 wives residing in Chonbuk-do and Kyonggi-do area. The causal model was tested and modified by the maximum likelihood method using UISREL 7 program. Results showed that wife abuse had effect on adaptation indirectly through the latent variables of personal resource and appraisal, which influenced the adaptation directly. In addition, social support indirectly affect the adaptation through personal resource and appraisal. It was also found that all these variables explained 27.6% of the total variance of wives'adaptation, and that personal resources was the most powerful variable in predicting the adaptation of the wives.

• Journal of Power Electronics
• /
• 제19권6호
• /
• pp.1486-1495
• /
• 2019

Dealing with the DC link fault poses a technical problem for an HVDC based on a modular multilevel converter. The fault suppressing mechanisms of several sub-module topologies with DC fault current blocking capacity are examined in this paper. An improved half-bridge sub-module topology with double direction control switch is also designed to address the additional power consumption problem, and a sub-module topology called hybrid double direction blocking sub module (HDDBSM) is proposed. The DC fault suppression characteristics and sub-module capacitor voltage balance problem is also analyzed, and a self-startup method is designed according to the number of capacitors. The simulation model in PSCAD/EMTDC is built to verify the self-startup process and the DC link fault suppression features.

• 대한기계학회:학술대회논문집
• /
• 대한기계학회 2008년도 추계학술대회A
• /
• pp.1815-1820
• /
• 2008

Self-catalytic behavior of combustion-synthesized carbon nanotubes (CNTs) is evaluated using a double-faced wall stagnation flow burner with a CNT-deposited stainless steel plate wall. CNT formation is observed using field-emission scanning and transmission electron microscopies and Raman spectroscopy. A self-catalytic behavior of multi-walled CNTs (MWCNTs) shows the enhanced ratio of channel diameter to tube wall thickness and the enhanced intensity ratio of G-band to D-band in Raman spectroscopy, implying that the quality of metal-catalytic, flame-synthesized MWCNTs can be much improved via a CNT self-catalytic flame-synthesis process. Thus, using a DWSF burner through the self-catalytic process has potential in mass production of CNTs having much improved quality.