• Journal of Korean Home Economics Education Association
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• v.24 no.4
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• pp.1-18
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• 2012

This study investigated the mate selection preferences of single female teachers by investigating the desired traits in socioeconomic, physical attractions, psychological traits and family roles of their prospected marital partner, in order to explore the current trends in homogamous marriage. A questionnaire was distributed to 295 unmarried female teachers selected by convenience sampling from the various cities. The teachers pursued homogeneity in age, educational attainment, religion, and occupation while they preferred partners with higher income level. In terms of physical assets, the attraction that the teachers felt towards the partner was the most important physical appearances. The respondents preferred partners who are masculine and an androgynous partner. The teachers held high expectations towards their future spouses in that they desired to share the roles of emotional, financial support, child care and kin keeping. A partner who shared modern sex role attitudes was preferred over someone who held traditional one. The pursuit for overall homogeneity reflects that the teachers seek for equality in their relationships with prospected marital partners by exchanging similar characteristic.

• Journal of the Korean Home Economics Association
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• v.36 no.11
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• pp.19-41
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• 1998

본 연구는 개인-환경 상호작용 가정을 바탕으로 한국의 두 가지 결혼 유형에 따른 배우자 선택과 결혼 적응의 메커니즘을 이해하기 위하여 개인, 과정, 맥락의 역할을 포함안 연구 모델 (person-process-context model)을 적용시켰다. 배우사 선택, 이에 따른 부부간 유사성과 결혼적응에 있어 개인과 사회적 특성의 상대적 기여도와 그 매커니즘을 조사하기 위해 154쌍의 한국 부부를 대상으로 설문조사 하였다. 연구결과에 의하면, 중매결혼과 연애결혼의 결혼유형에 관계없이 모두 동질혼의 경향을 보였다. 개인적 특성이 결혼 적응도와 높은 상관을 보인 반면, 부부간 유사성은 결혼 적응도와 유의한 상관이 업었다. 이는 결혼 적응에 있어서 환경적 요소(e. g. dyadic similarity)보다 개인적 요소가 중요하다는 것을 시사한다. 결혼유형에 따른 동질혼의 정도에는 유의한 차이가 없으며, 또한 동질혼의 정도에 따른 결혼적응도에는 유의한 차이가 발견되지 않았다. 연애결혼과 중매결혼의 중요한 차이는 결혼전 교제기간 이었다. 연애 결혼한 부부는 비교적 오랜 교제 기간을 통해 더 만족한 결혼생활을 영위하는 것으로 나타났다. 결혼전 교제기간의 효과를 통제한 후 두 결혼 유형의 결혼적응도에 대한 차이는 사라졌다. 연구결과들을 결혼과 성격에 관한 이론을 비탕으로 논의하였다.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.38 no.12
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• pp.1223-1231
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• 2010

The design is presented for a SATCOM antenna capable of simultaneous multi-band (X/Ku/Ka-Band) communications without replacement of feed horns or change of other parts in the application as a ground satellite terminal for large data transfer. The antenna is the offset configuration and consists of a dual-band(X/Ka-band) feed horn, a single-band(Ku-band) feed horn, a frequency selective surface(FSS) sub-reflector and a parabolic main-reflector. The antenna has a main reflector defining a prime focus and a frequency selective surface sub-reflector defining an image focus. A dual-band feed and a single-band feed are provided at each of the prime focus and image focus. The antenna is designed using 3D EM simulator and the gains measured in X/Ku/Ka-band of the complete antenna assembly is more than 31.6dBi, 36.8dBi, 40.8dBi, and the cross polarization is 21.7dB, 26.6dB, 25.2dB, respectively.

• Korea journal of population studies
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• v.35 no.1
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• pp.1-30
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• 2012

This study explores the effects of spousal dissimilarity on marital stability among transnational couples in Korea. Utilizing micro-data from the 2009 Korean National Multi-culture Family Survey, this paper examines whether formation of transnational marriage generally involves positive assortative matching on age and education. Indices of age dissimilarity and educational dissimilarity are calculated for each country of origin of the foreign wife, and their relationships to the average duration of marriage are analyzed. This study also conducts a micro-level analysis of whether age and educational dissimilarity between spouses helps explain variations in marital duration and probability of getting divorced. Results show greater incidences of spousal dissimilarity in age and educational attainment among transnational couples, which supports the transnational openness hypothesis proposed in this paper. The extant hypothesis that spousal dissimilarity increases the risk of marital dissolution and shortens the duration of marriage is not found to fit transnational couples in Korea.

• Journal of Korean Medical classics
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• v.17 no.4
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• pp.31-36
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• 2004

개요 및 목적: 고금명의(古今名醫)들의 신(神), 혼(魂), 백(魄), 의(意), 지(志) 등의 이상에 대한 치료를 고찰분석(考察分析)함으로서 오장과 신(神), 혼(魂), 백(魄), 의(意), 지(志)의 대응관계를 연구하였다. 방법: 임상병례(臨床病例)들을 취하고 통계방법을 사용하여 고금명의들의 처방 중에서 조건에 부합되는 처방 589예를 선택하여 약물귀경에 대하여 통계처리를 함으로서 각 종류의 정신중상에 사용된 약들이 어느 한 장부계통과 특정적인 대응규칙이 있는지 여부를 분석해 보았다. 결과: 임상치료(臨床治療)에서 여러 가지 정신증상에 사용된 약들은 오장계통에 모두 영향을 주었는데 여러 가지 정신증상을 치료하는 약들은 어떤 한 가지 증상에 그와 대응되는 한 가지 장부 계통이 연관되는 특정적인 규칙은 없었다. 각 종상에 사용된 약들은 오장계통(五臟系統)중에서도 심계통과 비위계통을 치료하는 약이 나타난 빈도가 가장 높았다.

• Korea journal of population studies
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• v.33 no.3
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• pp.1-30
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• 2010

This study examines difference in age at marriage between spouses and more importantly, investigates into the economic and social factors affecting the ratio or probability of wife-older marriages. Empirical analysis is carried out by applying both logit model and multinomial logit model to an independently pooled cross-section over 2004-2007. The data was collected mainly from the micro data service system of the Statistics Korea. Empirical results indicate that a wife-older marriage was more likely as a wife was more educated and was a larger income earner than a husband. On the other hand, a wife's educational and income level themselves had few systematic relationships with the probability of a wife-older marriage. The probability of a wife-older marriage tended to decrease(increase) when a husband's(a wife's) marriage was the second' The study calculates the average marginal effect of difference in the income level between spouses on the probability of a wife-older marriage, which is -0.007. That is, the probability of a wife-older marriage increases by 0.7% as a husband's income level is 1 million Korean Won less than a wife's. This results presents empirical evidence against widely distributed misconception on wife-older marriage in the mass media.

• Journal of Satellite, Information and Communications
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• v.11 no.3
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• pp.80-85
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• 2016

In this paper, by comparatively analyzing horn type speaker and line array type speaker developed based on line sound source theory and point sound source theory, we research whether theory is adaptable or not in real. Academically, point sound source is attenuated as much as 6dB in accordance with double distance and line sound source is attenuated as much as 3dB in accordance with double distance. Line array speaker system developed based on line sound source is analyzed by theory of line sound source about occurring small sound pressure attenuation and it is propose of research that array composition of right speaker is selected in accordance with use purpose and environment. For this purpose, we analyze theory of point sound source and line sound source. we analyze parameter value by simulating designed horn type speaker and line array speaker based on theory.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.25 no.11B
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• pp.1895-1902
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• 2000

이 논문에서는 AD 변화기의 앞에 설치되는 샘플-앤드-홀드 회로의 비선형성을 보상하기 위해 신경 회로망 기법과 볼테라 급수 모델을 직접적으로 적용하는 기법을 제안한다. 제안하는 기법들의 성능을 비교하기 위해, 볼테라 급수 모델에 기반을 둔 전통적인 p차 역산 방식의 결과와 비교 검토한다. 비교 검토를 위해서는 모노-톤과 투-톤 신호를 사용하여 출력의 고조파 및 혼변조 레벨을 살펴보았다. p차 역산 방식이 역 시스템을 구하는 것이라면 제안하는 기법들은 최적화 기법에 바탕을 두고 있다고 할 수 있다. 결과를 보면 어떤 한 방식이 다른 방식보다 성능이 월등하다고 할 수 없는데, 그 이유는 각 방식마다 나름대로의 장단점을 갖고 있기 때문이다. 보상 방식의 선택은 신호의 통계적 성질, 신호 레벨, 비선형성의 정도 등을 고려해야 한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2017.11a
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• pp.209-211
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• 2017

항로표지 음파표지로 사용되는 무신호기 주요 장비를 안정적인 성능이 담보되고 범용적으로 판매되는 제품을 선정함으로써 무신호기 고장발생 시 신속한 대처가 가능하도록 하고, 안개발생 방향을 고려하여 선택적으로 무신호기를 운영 할 수 있도록 설계하였다. 그리고 무신호기 음달거리를 공칭(명목적) 음달거리와 통상 음달거리에 대한 정확한 기준 없이 사용(표기)하는 등 통일성이 결여되어 공칭(명목적) 음달거리로 통일 할 필요성이 있다.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.44 no.7 s.361
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• pp.41-46
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• 2007

A novel post-linearization technique is proposed for CMOS cascode low noise amplifier (LNA). The technique uses dual common gate FETs one of which delivers the linear currents to a load and the other one sinks the $3^{rd}$ order intermodulation currents of output currents from the common source FET. Selective current branching can be implemented in $0.18{\mu}m$ CMOS process by using a thick oxide FET as an IM3 sinker with a normal FET as a linear current buffer. A differential LNA adopting this technique is designed at 2.14GHz. The measurement results show 11dBm IIP3, 15.5dB power gain and 2.85dB noise figure consuming 12.4mA from 1.8V power supply. Compared with the LNA with turning off the IM3 sinker, the proposed technique improves the IIP3 by 7.5 dB.