• Stress
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• v.26 no.4
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• pp.332-339
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• 2018

Background: The purpose of this study was to explore the mediating effect of ambivalence over emotional expressiveness on the relationship between covert narcissistic tendency of adults in their twenties and the satisfaction of interpersonal relations. Methods: 194 male and female adults in their twenties completed the self-report questionnaires on covert narcissism, ambivalence over emotional expressiveness, and interpersonal satisfaction. A mediated model was tested using the SPSS Macro by Hayes. Results: We verified that the ambivalence over emotional expressiveness played a mediating role in the relationship between covert narcissistic tendency and interpersonal satisfaction. In terms of the characteristics of relationship, except for the superior person, the relationship between lover/spouse and friends/colleagues showed the mediating effect between covert narcissism and interpersonal satisfaction. Conclusions: The covert narcissistic tendency itself affects low interpersonal satisfaction, but the ambivalence over emotional expressiveness affects low interpersonal satisfaction when the covert narcissist interacts with lover/spouse, friends/colleagues. We discussed the directions of intervention for the covert narcissist having low satisfaction in relationships, limitations and future suggestions of this research.

• International Area Studies Review
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• v.14 no.3
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• pp.86-107
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• 2010

Prior research on the relationship between output volatility and growth has produced mixed results, failing to provide clear empirical evidence on the sign of the relationship. In this paper, we raise the possibility that such failure is due to misspecification in empirical models previously used, i.e., not taking into account the business cycle dependence of the volatility-growth relation. We set off with the conjecture that higher volatility exerts qualitatively different effect on growth depending on whether the economy is in expansion or contraction. We estimate a series of ARCH-type models with the monthly industrial production data of the U.K., and find strong evidence suggesting that the volatility-growth relation is positive when the economy is in expansion, while higher volatility lowers growth rate in the contraction phase. We also find evidence supporting that the volatility-growth relation estimated in the paper captures a a causal relation, not a bidirectional correlation.

• The Microorganisms and Industry
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• v.15 no.1
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• pp.3-9
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• 1989

효모의 생활환에서 보면, 1배체세포는 접합형을 달리하는 양세포사이에서 성접합에 의한 2배체세포를 형성하여 다시 새로운 세대에 이행한다. 이성적세포융합은 2종의 세포사이에서 행해지는 특이성이 매우 높은 반응에 기인하고 있기 때문에, 양 세포간의 관계는 다세포와는 달리 단순하다는 점이 연구재료로서의 이점으로 들 수 있겠다. 이러한 이점을 살려 얻어낸 정보전달기구를 해명하기 위한 몇가지 결과를 소개한다.

• 한국HCI학회:학술대회논문집
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• 2007.02a
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• pp.932-937
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• 2007

생의학 분야 문헌의 양이 빠르게 증가함에 따라, 생의학 연구자들이 필요로 하는 정보를 얻기가 어렵게 되었다. 이를 해결하기 위해, 인간-컴퓨터 상호작용 분야에서는 생의학 문헌 검색 시스템, 또는 생의학 문헌의 정보 추출 시스템 등에 대한 연구가 진행되고 있다. 본 논문에서는 생의학 문헌으로부터 정보를 자동으로 추출하기 위한 관계정보 추출 시스템에 대해 소개한다. 소개하는 시스템은 크게 요약 수집 모듈, 관계 추출 모듈, 관계 가시화 모듈로 구성되어 있다. 우선, 요약 수집 모듈에서는 특정 주제의 문헌들을 검색 및 수집한다. 그리고, 관계 추출 모듈에서는 수집된 문헌들에 대해서, 단백질/유전자 등의 생물학 개체를 인식하고, 구문분석을 통하여 인식된 개체들 사이의 관계를 추출한다. 마지막으로, 관계 가시화 모듈에서는 추출된 관계를 통합하여 네트워크 형태로 가시화한다. 이 시스템은 생물학 실험 이전의 문헌 기반 타당성 검사, 단백질-단백질 상호작용 또는 특정 질병과 유전자의 조절관계 분석, 또는 대용량 문헌 처리를 통한 패스웨이 데이터베이스 구축 등에 활용될 수 있다.

• Journal for History of Mathematics
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• v.19 no.2
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• pp.101-114
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• 2006

The content and method of geometry taught in secondary school is rooted in 'Elements' by Euclid. On the other hand, however, there are differences between the content and structure of the current textbook and the 'Elements'. The gaps are resulted from attempts to develop the geometry education. Specially, the content and method for the proportional relations of geometric figures has been varied. In this study, we reviewed the changes of the proportional relations of geometric figures with pedagogical point of view. The conclusion that we came to is that the proportional relations in incommensurable case Is omitted in secondary school. Teacher's understanding about the proportional relations of geometric figures is needed for meaningful geometry education.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• v.9 no.1
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• pp.1161-1164
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• 2005

본 논문에서는 얼굴 영상에서 눈동자와 입술을 효과적으로 인식하는 방법을 제안하였다. 색 정보를 기반으로 LDA를 이용하여 입술 영역을 찾았다. 눈동자와 흰자위로 구성되는 눈의 형태적인 특징과 눈동자와 눈썹 사이의 관계를 반영하는 평가함수를 정의하여 눈동자를 인식하였다. 입술에서의 밝기차이를 기반으로 가중치 벡터를 정의하여 위 입술과 아래 입술 사이의 경계선을 찾고 입술과 인접한 피부와의 밝기 차이를 이용하여 입술의 양 끝점 및 위와 아래의 끝점을 찾았다. 여러 영상에 대한 실험 결과 좋은 결과를 얻었다.

• Clinical and Experimental Pediatrics
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• v.46 no.2
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• pp.173-177
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• 2003

Purpose : Recently, different results about factors affecting accurate quantitation of 24-hr urinary protein(24UP) amount using spot urine protein/creatinine ratio(PCR) have been reported. The current study was designed to evaluate correlation between 24UP amounts and PCR in children, and the effect of 24UP amounts, age, sex, and glomerular filtration rate(GFR) on this correlation. Methods : Among 94 patients who visited the department of pediatrics in Busan Paik Hospital from March 2002 to August 2002, 68 patients whose urinary creatinine excretion was ${\geq}15mg/kg/day$ were included in this study. All the patients were divided into I, II/A, B group(I : 24UP<500 mg/day, II : $24UP{\geq}500mg/day$, A : <10 years of age, B : ${\geq}10years$ of age). Pearson correlation analysis was performed between 24UP and PCR to evaluate the relationship. We defined fractional difference between 24UP and PCR, and then performed multiple regression analysis with 24UP amount, age, GFR and fractional difference. Results : There was a strong positive linear correlation between 24UP and PCR(R=0.936, P<0.0001) in all patients, and the correlation was also good in each group. Using PCR cutoff values of 0.5, the PCR provided high sensitivity, specificity, positive and negative predictive value in predicting 24UP amount ${\geq}500mg$. The factors affecting accurate quantitation of proteinuria using spot urine PCR was age, not 24UP amount, GFR or sex. Conclusion : Spot urine PCR is a useful test but has limitations in predicting 24UP amount. Therefore, it should be used only as screening method. Age-adjusted PCR cutoff values may be necessary to predict 24UP amount in children with proteinuria.

• The Korean Journal of Financial Management
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• v.20 no.2
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• pp.235-261
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• 2003

We examine the relationship between the trading activities of Korea Stock Price Index (KOSPI) 200 futures contract and its underlying stock market volatility for about six years from May 1996 when the futures contract was introduced. The trading activities of the futures contracts are proxied by the volume and open interest, which are divided into expected and unexpected portions by using the previous data. The daily, intradilay, and overnight cash volatility is estimated by the GJR-GARCH model. We find a positive contemporaneous relationship between the intradaily stock market volatility and the unexpected futures volume while the relationship between the volatility and expected futures volume is weakly negative or non-existent. We also find that the unexpected futures volume strongly causes intradaily cash volatility. On the other hand, the overnight cash volatility causes the unexpected futures volume. The impulse responses between these variables are all positive. The result implies that during a trading time futures trading tends to increase the cash volatility while the unexpected overnight changes in cash volatility tends to increase the futures trading activities. We, however, find no association between the cash volatility and futures maturities.

• School Mathematics
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• v.19 no.1
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• pp.117-135
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• 2017

Even though patterns and correspondence serve a fundamental basis of function for elementary students, there has been lack of research in this field. This study explored prior studies to extract the key instructional elements on how to teach patterns and correspondence. This study then analyzed the unit of 'patterns and correspondence' in the mathematics textbooks in terms of four key instructional elements (i.e., relation to real-life contexts, diversity of pattern tasks, exploration for a correspondence relationship, and teaching variables). The results of this study showed that topics dealing with patterns and correspondence were represented with relation to real-life contexts but diversity of pattern tasks and exploration for a correspondence relationship were needed to be further considered in the textbooks. Another noticeable result was that teaching variables was not explicitly addressed in the textbooks. Based on these results, this study provides textbook writers with implications on what to further consider in dealing with patterns and correspondence.

• Journal of Digital Convergence
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• v.11 no.1
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• pp.315-320
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• 2013

We have investigated the variation of spherical aberration of the anterior and posterior surface in a Korean sample population with various age between 20 to 71 years old. We used Pentacam (Oculus Inc., Germany) to measure the corneal radius, asphericity, and spherical aberration of 290 patients with normal cornea. There were negative correlation between corneal anterior radius and spherical aberration(r = -0.22, p<0.0001), and, there were negative correlation between corneal posterior radius and spherical aberration(r=-0.27, p < 0.0001). There were positive correlation between anterior asphericity and spherical aberration(r = 0.24, p < 0.0001), however there were negative correlation between posterior asphericity and spherical aberration(r = -0.17, p=0.00288).The average of anterior spherical aberration and posterior spherical aberration was $0.482{\pm}0.099{\mu}m$ and $-0.098{\pm}0.029{\mu}m$. The average of spherical aberration was $0.385{\pm}0.097{\mu}m$. There were significant positive correlations between anterior spherical aberration and age(r = 0.227, p<0.0001), and there were positive correlations between posterior aberration and age(r = 0.349, p<0.0001). It is considered that this data can be used as basic information for furture studies for improving the quality of vision of modern human and, through the analysis of the spherical aberration of cornea was to provide a better understanding of the optical part of the Korean's eye.