• Geotechnical Engineering
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• v.33 no.3
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• pp.43-49
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• 2017

• Journal of the Korean Home Economics Association
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• v.30 no.3
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• pp.271-283
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• 1992

본 연구의 목적은 가족스트레스 이론과 선행연구를 바탕으로 하여 제안된 이론적 모델의 검증을 통하여 일과 가정생활의 두 역할을 병행하는 데서 기인하는 역할긴장이 매개변수인 가족자원과 대처방안에 의해 어떻게 중재되어 삶의 질에 영향을 미치는가를 규명하는데 있다. 다단계 추출법으로 미국 로스엔젤레스에 거주하는 한인교포 중 맞벌이부부를 연구대상으로 선정하여 질문지를 통해 남편과 아내의 자료를 표집하였지만 본 연구에서는 117명의 남편의 자료만을 결과 분석하였다. 분석방법은 이론적 검증에 유용한 LISREL Ⅶ 프로그램이 사용되었다. 처음에 제안된 이론적 모델의 검증에는 문제를 보였지만 PSI Matrix를 고정하고 가정생활의 역할 stressor와 가족자원의 경로를 첨가하여 수정된 모델은 자료에 의해 충분히 검증되었다. 그러나 남편의 이론적 모델은 가족스트레스 이론을 일반화시키지 못했기 때문에 일과 가정생활의 두 역할을 병행하는 데서 기인하는 남편의 역할긴장을 가족스트레스 이론으로 설명하는데는 문제가 있는 것으로 나타났다. 연구결과를 바탕으로 본 연구에서 제안된 이론적 모델의 의미와 제한점 등을 살펴본 후 미래연구가를 위한 방안이 제시되었다.

• Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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• 1993.07a
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• pp.146-151
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• 1993

쇄파대에서 발생되는 연안류의 분포는 완만한 곡선분포를 보이는데 단순파인 경우이의 해석은 확산계수의 도입으로만 가능하다는 점은 널리 알려진 사실이다. Harris(1967)는 현장관측과 수조실험으로 이 분야 초기연구로서 쇄파대 확산의 변이를 무시하고 평균확산계수치만을 고려하였다. 연안류해석의 확고한 이론적 기초를 마련한 Longuet-Higgins(1970)는 그의 이론식 도출고정에서 확산계수 도입의 필요성을 인식하였으며, 특성길이로서 연안선으로부터의 거리를 택하고 특성속도로서 파속을 택하였으며 쇄파대내에서 파속은 군속도와 같다고 가정하였다. (중략)

• Journal of the Korean Society for Precision Engineering
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• v.4 no.2
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• pp.56-67
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• 1987

박판연속주조법은 용강으로부터 직접 제품을 제조하는 방법으로써 최근 에너지 절약, 신소재개발의 측면에서 주목되어지고 있다. 쌍로울식 연속주조법은 두개의 로울러 사이 에 있어서 응고완료점의 제어가 극히 중요하다. 본 논문에서는 경제고정법에 의하여 액 상역과 고상역을 동시에 해석하는 방법을 제안하여 이론해석의 결과를 실험결과와 비교 한다. 또한 주조조건에 영향을 미치는 로울러 각속도, 로울러간의 간격이 응고형상에 미치는 영향을 밝히며 응고완료점이 로울러출구에 존재하는 주조조건을 구하여 주조가능 조건을 검토한다.

• Applied Biological Chemistry
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• v.38 no.1
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• pp.26-30
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• 1995

To produce ethanol from Jerusalem artichoke powder efficiently, Kluyveromyces marxianus FO43 cells were encapsulated in 2% sodium alginate and were cultured in batch reactor to investigate the fermentation properties. Batch culture of immobilized cells left for 4 days in 15% Jerusalem artichoke medium showed ethanol concentration of 3.38%(w/v) and ethanol yield to theoretical value of 54.20%, lower than 3.76%(w/v) and 71.13% for the culture of free cells. Addition of cellulase to $15{\sim}20%$ Jerusalem artichoke media increased the production of ethanol, owing to remarkable reduction in consistency of the suspension. So it was possible to achieve an ethanol concentration of 5.57%(w/v) arid an ethanol yield to theoretical value of 68.86% in even 20% Jerusalem artichoke medium by cultivation of immobilized cells for 4 days. The alginate beads showed constant ethanol productivity after recycling 11 times (22 days) in repeated batch fermentation.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2011.07a
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• pp.11-13
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• 2011

양방향 필터 (Bilateral filter)는 에지 보전 평활화 필터로써 디노이징, 반사 제거, 스테레오 매칭 등 다양한 분야에서 사용되고 있다. 이는 기존의 가우시안 필터에 사용되는 공간 도메인 커널 (spatial kernel)이외에 강도 도메인 커널 (range kernel)을 추가로 사용하여 비슷한 강도의 픽셀에 높은 가중치를 부여함으로써 에지를 보전하면서 평활화를 한다. 또한 양방향 필터는 비등방성 확산 필터 (Anisotropic diffusion filter)와 달리 항상 수렴을 보장한다. 따라서 본 논문에서는 고정점 반복 이론을 적용하여 양방향 필터의 수렴을 수학적으로 증명한다.

• The Korean Journal of Woman Psychology
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• v.15 no.2
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• pp.259-283
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• 2010

The present study was conducted to examine the effect of attitude, subjective norm, and perceived behavior control in explaining multicultural receptive behavior intention as well as multicultural receptive behavior, i.e., test the theory of planned behavior(Ajzen, 1991), to investigate the role of Korean social identity in the prediction of multicultural receptive behavior, and to investigate the role of stereotype and prejudice(i.e. attitude about object) in the prediction of multicultural receptive behavior. A sample of 505 undergraduate participated in the survey. The results from stepwise regression analyses indicated that the multicultural receptive intention was explained 47.4% by the theory of planned behavior, while multicultural receptive behavior was explained 61.1% by this theory. When the Korean social identity, stereotype and prejudice were added into the stepwise regression analysis, the variance was increased to 51.8% for multicultural receptive intention and 65.9% for multicultural receptive behavior. Furthermore, the influence of the Korean social identity on multicultural receptive intention/behavior was weak, but the influence of the stereotype on multicultural receptive behavior was strong. Finally the implications and limitations of the present study as well as the future directions of this area were discussed.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.15 no.1
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• pp.81-88
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• 2004

Turbo code has been adopted in the 3GPP standard, since its performance is very close to the Shannon limit. However, the turbo decoder requires a lot of computations and the amount of the memory increases as the block size of turbo codes becomes larger. In order to reduce the complexity of the turbo decoder, the Log-MAP, the Max-Log-MAP and the sliding window algorithm have been proposed. In this paper, the performance of turbo codes adopted in the 3GPP standard is analyzed by using the floating point and the fixed point implementation. The efficient decoding method is also proposed. It is shown that the BER performance of the proposed method is close to that of the Log-MAP algorithm.

• Journal of Digital Convergence
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• v.10 no.11
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• pp.403-418
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• 2012

In this paper, we attempted to theorize the synergy effect between the value creating attributes for digital convergence model in the service industry. Our investigation is based upon contingency fit theory to understand the strategic fit for the two inherent value attributes of fixed and mobile value, as well as resolving fundamental limitations of service processes. Empirical validation of the derived research model is analyzed using hierarchical regression method. The results indicate that the relative advantage of each value creating attributes are strongly associated with the characteristics of domain service industries, and compatibility is critical to user adoption of convergent service model. Moreover, the less significant statistical impact of the synergy between mobile and fixed value attributes and others implies that each value attribute uniquely contributes to particular IT convergence model, which thereby offers critical insight that focusing the convergent value in conjunction with specific application domain is the most appealing managerial focus. The findings provide useful insight for the further research in IT based industry convergent business model areas.

• KDI Journal of Economic Policy
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• v.34 no.2
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• pp.1-15
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• 2012

We develop an identity choice model within the context of a stereotyping-cum-signaling framework. The model allows us to explore implications of the fact that, when individuals can choose identity, then the distribution of abilities within distinct identity groups becomes endogenous. This is significant because, when identity is exogenous and if the ability distributions within groups are the same, then inequality of group reputations in equilibrium can only arise if there is a positive feedback between group reputation and individual human capital investment activities (Arrow, 1973; Coate and Loury, 1993). Here we show that when group membership is endogenous then the logic of individuals' identity choices leads there to be a positive selection of higher ability individuals into the group with a better reputation. This happens because those for whom human-capital-investment is less costly are also those who stand to gain more from joining the favored group. As a result, ability distributions within distinct groups can endogenously diverge, reinforcing incentive-feedbacks. We develop the theoretical framework that can examine the positive selection and the endogenous group formation. The model implies that inequality deriving from stereotyping of endogenously constructed social groups is at least as great as the inequality that can emerge between exogenously given groups.