• Korea journal of population studies
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• v.33 no.1
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• pp.103-131
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• 2010

This study observes how the conjugal sharing of the roles such as breadwinning, housework/childcare, and leisure activities affects wives' marital satisfaction, and how the relationships among the considered variables are similar or different across age categories. Two dependent variables, the relationship satisfaction and the marital happiness, are measured and estimated as the concept of the marital satisfaction. Analysed is the Korean Longitudinal Survey of Women and Families 2008 collected by Korean Women's Development Institute. Among women in the ages of 30s-50s, full-time housewives with the breadwinning husbands feel happier with their marriage than the wives in dual career families, and those in dual career families are happier than the breadwinning women with the househusbands. Among the women in their 40s, the highest relationship satisfaction is reported by the those of the dual career families. Wives in their 30s prefer equal division of familywork in explaining the relationship satisfaction, while wives in the age of 40s and 50s show only the effect of reducing wives' portion. The co-spousal leisure activity is consistently significant in its positive relationship with the marital satisfaction across the age categories. There is a general tendency that the marital satisfaction is the highest in the youngest age bracket and the lowest in the oldest. For managing better marriages, individual efforts of both spouses as well as social support are required.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.6
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• pp.15-20
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• 2015

Bit patterned media (BPM) is a high capacity storage system and has attracted a great deal of attention as next generation data storage. When BPM is made with high density, the space between the islands narrows, because BPM records one bit in an island. For this reason, BPM has inter-symbol interference in all directions, unlike in current storage systems where it is in only one direction. In this paper, we propose an equation for compensating two-dimensional ISI. We conduct experiments on track misregistration. When using the proposed inter-symbol interference preprocessing, the BER performance is improved, regardless of the amount of track misregistration.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.662-664
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• 2023

해양 식물플랑크톤의 성장은 유해적인 적조를 유발할 수 있으며, 이는 여러 국가의 생태계에 피해를 주는 상황이다. 적조를 모니터링하는 것은 식물플랑크톤 미생물의 증가를 예방하고 통제하기 위해 중요하다. 그러나 현재의 적조 모니터링 기술은 날씨, 시간 제약 및 실시간 모니터링에 대한 어려움으로 인해 측정 정확도에 영향을 미치는 한계가 있다. 본 연구는 특히 적조 발생을 감지하기 위한 목적으로 개발된 자동 실시간 모니터링 시스템의 성공적인 개발을 보여준다. 개발한 시스템은 음향 반사파 데이터 처리를 통해 합성곱 신경망(Convolutional neural networks, CNN)을 활용하여 식물플랑크톤 농도를 정확하게 구별할 수 있다. 특히, 이 CNN 모델은 음향 신호의 변환된 주파수 스펙트럼과 Cochlodinium polykrikoides (C. polykrikoides)의 농도 간의 상관 관계를 수립하는 데 뛰어난 효과를 나타냈다. 이 CNN 은 C. polykrikoides 를 감지하는 데 0.90 의 정확도를 보여준다. 이러한 모니터링과 CNN 분류의 활용은 실시간 측정의 중요한 잠재력을 보여주며, 추가적인 절차가 필요 없는 자동 모니터링 시스템을 구축할 수 있을 것으로 예상된다.

• 한국노년학
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• v.32 no.4
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• pp.1163-1180
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• 2012

The main purpose of this study is to figure out the spending tendency of elderly consumers for their grandchildren. To this end, a detailed survey was carried out for two months from October 1 to November 30, 2011. The respondents consist of 461 elderly consumers over 60s who have grandchildren in elementary grades. Among the gathered data, relevant information was sorted out, coded, and then turned into statistical figures through SPSS 18.0 program. The outcome of this research is explained in the following three respects. First of all, based upon factor and cluster analysis, the role of grandparents has been divided into three categories, which are a babysitter, a friend and a visitor. Depending on their role, the surveyed elderly have been split into three groups-'Friend Group', 'Formal Visitor Group', 'Attached Group'. Second, to give you an overview of the consumption trend of the three groups, this study has reviewed the expenditure items, spending amount and consumption patterns, and made a list of products and services they purchased for the past one year for their grandchildren. Third, given the probability of wealth transfer to the next generation, there is a compelling need to figure out the purchase pattern of financial products. The elderly have been categorized into those with bank deposits only and those with a mixture of bank deposits and other financial products (insurance, fund, stocks, gold, dollar etc.).

• KOREAN JOURNAL OF CROP SCIENCE
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• v.36 no.4
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• pp.310-318
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• 1991

This experiment was carried out to obtain the information on the variation of chromosome number in pollen mother cell (PMC) and somatic cell of the progeny from the cross between hexaploid triticale cv. Sinkihomil and five hexaploid wheat varieties. The results were summarized as follows: Number of uni-, bi- and tri-valent in PMC was 11.9, 14.4 and 0.44, respectively, in the F$_1$ between triticale and wheat. Significant positive correlation between the pollen fertility and seed set rate, pollen fertility and bivalent number of PMC, and seed set rate and bivalent number of PMC, and negative correlation between pollen fertility and uni-or tri-valent of PMC in the cross between triticale and wheat were detected. F$_1$ (crossed seed) had 42 chromosomes, F$_2$ and F$_1$/P$_1$ showed high frequency of hyperploid (42-49) and F$_1$/P$_2$ showed high frequency of hypoploid (36- 42), which suggest non-random segregation for somatic chromosome number. in the cross between the triticale and wheat.

• The Journal of the Convergence on Culture Technology
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• v.9 no.6
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• pp.981-992
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• 2023

This study, the effect of organizational culture perceived by millennial Naval Personnel working on naval ships on organizational citizenship behavior was empirically analyzed. First, it was found that OC(group/hierarchy) had a positive effect on OCB. Second, affective commitment plays a mediating role in the relationship between OC(group/hierarchy) and OCB. It was confirmed that organizational culture has a direct effect on OCB, but also indirectly through affective commitment. Third, Coworker social loafing had a negative moderating effect in the relationship. Therefore, in order to improve organizational citizenship behavior, it is necessary to improve a balanced organizational culture suitable for changes in the organizational environment, Strengthen the key influencers for organizational members to affective commitment themselves in the organization, and promote improvement in social loafing.

• Journal of Korean Society of Transportation
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• v.33 no.5
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• pp.461-469
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• 2015

The next generation high-speed train, HEMU-430X, was developed and is now being tested. However, the existing mode choice models based on the guidelines for feasibility studies do not consider a high-speed train with a higher speed than KTX. This limitation might result in inaccurate demand forecasting. In this research, a stated preference survey was conducted in order to supplement the problem by considering the characteristics of HEMU-430X. Based on the survey results, this research developed two mode choice models, including a multinomial logit model and a nested logit model. For this purpose, the utility functions of travel time and travel costs were estimated using a Limdep 8.0 NLOGIT 3.0 package. After comparing the two models, it was concluded that the nested logit model is appropriate. The paper suggested a plan to implement the nested logit model and presented a policy implication.

• Korean Security Journal
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• no.41
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• pp.67-96
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• 2014

Today each country in the world goes beyond the narrow concept of national security that was limited to national defense and ideology and are entering multi-dimensional global system mainly based on economic profits. Nevertheless, conflicts between nations due to religious and ideological reasons have brought unprecedentedly intense disputes Security services for head of states have been an important national mission in every era and society. However, they are becoming a main target for assassination and attacks by terrorists. Attacks on the head of state and other VIPs can cause aftermath ranging from war to conflict situation, political crisis, and economic loss. Therefore this study aims to draw insights by comparing protective security units of Korea, the U.S., and Japan which have different legal basis and sociocultural characteristics. Especially in South Korea, which faces difficult diplomatic stance due to the tension with North Korea and relationship with other countries such as the U.S., China, and Russia as well as polarization between classes, generations, regions, and ideologies, cohesion among members of society has weakened and hatred toward the head of state has been brought, which emphasizes the important of national security services. Therefore the study of protective security units and its operation by comparison between neighboring countries will be able to bring insights on the promotion of the security service.

• Journal of Digital Convergence
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• v.12 no.10
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• pp.21-34
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• 2014

The purpose of this paper is to examine how technological innovation and increasing competition affect the relationship among market players and what policy issues are emerging through the case of UHDTV. There emerges sharp conflicts among consumer-electronics companies, telcos, terrestrial broadcasting companies and pay-TV companies since they all have different perspectives and interests regarding the way UHDTV services are introduced in the competitive broadcasting market. Dualized governance structure leads to aggravating conflicts. While the case of UHDTV demonstrates clearly that technological innovation and more competition into the market create conflicts among these market players, it is well expected that we will see very often similar conflicts and policy chaos in this innovative and competitive broadcasting industry.

• Korean Journal of Culture and Social Issue
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• v.12 no.1
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• pp.161-195
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• 2006

The purpose of this study is to examine factors influencing quality of life for individuals in the family, school or workplace, leisure settings, and Korean society using the indigenous psychological analysis. A total of 3,406 participants, consisting of 1,331 elementary, middle, high school students and 2,075 parents and teacher, completed an open-ended questionnaire developed by Kim and Park (2004b). The respondents reported the factors that influence quality of life in Korean society as follows: Economic condition, collective effort, leisure and cultural life, harmonious interpersonal relationships, effective government policy, and educational attainment. The factors that reduce quality of life in Korean society are as follows: Economic uncertainty, political instability, lack of citizenry, ingroup favoritism, corruption, lack of facilities for leisure and social life, and overemphasis on educational achievement. Second, the factors that influence quality of life in the family are as follows: Harmonious family relations and financial security. For students relationship with friends and academic achievement are reported as important factors influencing quality of life at school. For adults, harmonious interpersonal relationship, financial factors and occupational achievement are reported as important factors influencing quality of life at the workplace. For leisure and social leisure life, financial security, leisure time and interpersonal relationships are reported as important factors influencing quality of life. Third, as for generational differences, students reported political instability and adults reported economic uncertainty as the most important factor reducing quality of life in Korean society. For family life, students reported conflicts among family members and adults reported financial constraints as the most important factor reducing quality of life. For leisure and social life, students reported lack of leisure time and adults reported financial constraints as the most important factor reducing quality of life. Fourth, for students the following characteristics were associated with higher quality of life: Higher socio-economic status of the family, younger, and higher academic achievement. For adults, the following characteristics were associated with higher quality of life: Higher socio-economic status of the family and greater achievement their social life. Implications of these results on the quality of life in Korea, focusing on human relationship, financial factors, self-regulation and educational achievement are discussed.