• Korean Journal of Cognitive Science
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• v.27 no.1
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• pp.61-99
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• 2016

This research investigated that participants' response time and recognition in the decision-making situation would vary according to either rational or emotional stimuli and analyzed how brain functions are related to each type of stimuli by means of fMRI. We tried to address the difference of cognitive processing between rational stimuli and emotional stimuli in the perspective of information processing theory. In order to achieve the research purpose above, we conducted two kinds of experiment studies. In study 1, subjects conducted decision-making task which selected which kind of information type the stimuli was after stimuli - rational stimuli or emotional stimuli - was randomly seen during experiment. During this experiment, we investigated the effect of each stimuli by measuring the duration from the onset time at which stimuli was shown to the response time at which subjects conducted decision-making. Furthermore, we compared the brain functions by finding out what kinds of brain areas were activated during the decision-making task. In study 2, subjects conducted recognition task at which subjects made a decision whether the stimuli was sees in the previous experiment or not. During the second experiment, we investigated the recognition effect by measuring the memory for each stimuli type. Moreover, we compared the cognitive processes during recognition by analyzing the differences of brain area functions. The results of two experiments above were as following. Firstly, regarding the response time as the effect of stimuli, we found that the effect of emotional stimuli was higher than that of rational stimuli. And regarding the recognition as the effect of stimuli, it was found that the effect of rational stimuli was higher than that of emotional stimuli. Secondly, the explanation about the characteristics of cognitive processes with the result of behavioral response by analyzing brain functions was as following. First of all, regarding the decision-making task which conducted for analyzing the effect of response time, the relatively high activated brain areas of rational stimuli were related with the functions of movement control or working memory, and the relatively high activated brain areas of emotional stimuli were connected with the functions of lingual processing.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.10
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• pp.4660-4668
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• 2012

The purpose of this study was to investigate the relationship among stress, ego-resilience and school adjustment resilience of the high school girl students. A cross-sectional, descriptive study was conducted. The subjects were 250 students from 3 high schools located in I city. Data were collected on September, 2010 by using a structured questionnaire. The data were analyzed using PASW/WIN 18.0 program. The mean score of stress was 3.05, among the subitems, the score of the school related stress was the highest. The mean score of ego resilience was 2.86, and school adjustment resilience was 75.58. Stress showed significant differences according to satisfaction level with school and teachers. School adjustment resilience was significantly different in terms of satisfaction level with school and teachers, grade, alcohol drinking experience and having counter sex friends. And there were significant correlations among school adjustment resilience and school related, family related, friend related stress. These results suggest that the school life, teachers, and friends have important duties to improve school adjustment resilience. Therefore, it is needed to develop intervention program considerated school related factors to release stressors of the high school girl students.

• Journal of the Korean Society for Nondestructive Testing
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• v.19 no.5
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• pp.356-362
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• 1999

Based on the assumption that film density increases exponentially with exposure in the industrial radiographic film. an equation representing the characteristic curves of industrial radiographic films and a new density-thickness relation are suggested. The accuracy and reliability of the suggested relation has been tested using radiographs of a carbon steel step wedge with known thickness variation by polychromatic X-ray and ${\gamma}$-ray ($Ir^{192}$). The experimental results were well agreed to the proposed relation in the range of film densities from 1.0 to 3.5 and it was more accurate than the conventional relation. It is also found that ${\gamma}$-ray is more effective in this purpose than polychromatic X-ray, which results in variation of effective linear absorption coefficient due to beam hardening effect as thickness increases. Therefore using the equation and experimentally determined parameters the quantitative evaluation of thickness variation is possible and it can be used to evaluate the depth of local corrosion of pressure vessels in plants.

• Korean Journal of Soil Science and Fertilizer
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• v.19 no.1
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• pp.38-49
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• 1986

In order to improve effectiveness of rhizobia-legume symbiotic nitrogen fixation, ecological and physiological characteristics of indigenous rhizobia distributed in Korea soil, that is, the effects of soybean cultivation, physico-chemical properties and climate on the population of indigenous rhizobia and other soil microbes were investigated. The results were summarized as follows: The population of indigenous rhizobia were ranged from $5.1{\times}10^4$ cells to $196.8{\times}10^4$ cells per gram of soil in soybean cultivated soils but from $1.6{\times}10^4$ cells to $78.6{\times}10^4$ cells per gram of soil in soybean un-cultivated soils sampled from 9 different agro-climate zone. The highest population was observed in a soybean cultivated loamy soil from southern part of Korea. The content of available phosphate, exchangeable Ca, Mg, Cu, and B in soil were positively correlated but active Fe, exchangeable Al, Na, and $SO_4$ were inversely correlated to the population of indigenous rhizobia. The inverse relationship was observed between the number of indigenous rhizobia and actinomycetes.

• Korean Journal of School Psychology
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• v.17 no.1
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• pp.87-107
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• 2020

The purpose of this study was to examine the mediating effect of functional and dysfunctional expressions of anger on the relationship between covert narcissism and dating violence among college students. The study also investigated gender differences with regard to covert narcissism, dating violence, and functional and dysfunctional expressions of anger. To this end, 339 college students (133 males, 206 females) with heterosexual dating experiences in the Busan Metropolitan area were recruited. They responded to the Covert Narcissism Scale, the Revised Conflict Tactics Scale 2, and the Korean adaptation of the State-Trait Anger Expression Inventory. The results were as follows. First, covert narcissism, dating violence, and functional and dysfunctional expressions of anger differed significantly by gender. Second, there were statistically significant correlations between covert narcissism, dating violence, and functional and dysfunctional expressions of anger. Third, multiple regression analysis showed that dysfunctional expressions of anger for males were positively correlated with dating violence while functional expressions of anger were negatively correlated. For females, dysfunctional expressions of anger were positively correlated with dating violence while functional expressions of anger were not significantly correlated. Fourth, dysfunctional expressions of anger completely mediated the relationship between covert narcissism and dating violence for both males and females, but functional expressions of anger had no mediating effect. These results suggest that dysfunctional anger expression control program should be developed for students which may help those with covert narcissistic tendencies to functionally express their anger. Future research should analyze dating violence prevention and counseling programs.

• Journal of the Korea Convergence Society
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• v.13 no.2
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• pp.123-129
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• 2022

This study investigated a differences in grade (G), academic performance (AP), and household income (HI) on adolescents' stress (S), peer relationship (PR), and depression (D) in the coal mine area. The study method was to measure S, PR and D according to different of G, AP, HI for 87 middle school students located in Taebaek and Samcheok Dogye area. As a result, there were significant differences in PR in the 2^nd G, and significant differences were shown in PR and D according to HI and AP. Based on these results, it is necessary to expand the support program for PR of middle school students in the coal mine area, and to develop and support active health promotion programs in the community for stress relief and academic activities, especially for low HI.

• Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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• 1991.06a
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• pp.70-75
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• 1991

기어는 기계시스템에서 동력전달 및 운동전환을 담당하는 기본 요소로 공작기계, 건설기계, 농업기계 등의 산업기계와 항공기, 자동차, 선박등의 운송분야, 사무용 및 계측기기 등 산업전반에 걸쳐 사용되고 있으며, 최근에는 로보트를 위시한 자동화 장치의 구동 및 동력전달 장치로 사용되고 있다. 최근의 기어시스템은 기계류의 일반적인 경향인 고속, 고부하, 결량화 추세에 따라 고정밀, 소형화되어 가고 있으며 부하한계에 가깝도록 큰 하중에 견딜것이 요구되고 있다. 따라서 기어의 설계 및 제작시, 여유있는 설계가 허용되지 않으며 정밀성을 높이기 위한 설계로, 설계인자의 세분화가 요구되어지고 있다. 국제적으로 통용되고 있는 강도설계 규격에서 면압강도시 표면상태계수(Surface condition factor)를 정의하고 있다. 본 연구에서는 동력순환식 기어 시험장치를 이용하여 표면처리 상태가 다른 3종류(열처리를 하지 않은 기어, 침탄 및 고주파 표면 열처리한 기어)의 스퍼어 기어를 이요하여 회전수별 표면거칠기의 변화 상태를 고찰하고, 변수를 응용하여 물리적 의미를 파아갛고, 윤활해석을 통한 윤활조건과 치면상태와의 상호 관계에 대하여 고찰해 보고자 한다.

• Proceedings of the Korean Information Science Society Conference
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• 1999.10b
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• pp.404-406
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• 1999

비디오 데이터의 효율적인 저장, 관리를 위해서는 장면 전환 검출을 통한 비디오 분할 기술에 대한 연구가 필요하므로, 최근 들어 압축 비디오상의 특징 정보를 직접 추출하여 장면 전환 검출에 사용하는 방법에 대한 연구가 많이 이루어지고 있다. 본 논문에서는 MPEG 압축 비디오 상의 에지 정보를 복호화 과정을 거치지 않고 직접 추출하여 장면 전환 검출에 사용하는 새로운 방법을 제안하였다. 이산 여현 변환(DCT)된 블록내 AC 계수의 부호를 통해 에지의 모양을 알아내었으며, AC 계수간의 상관 관계를 통해 에지의 방향과 세기를 측정하여 프레임을 정합하는 방법을 사용하였다. 실험 결과 사용한 특징 정보가 명도나 색상 변환에 무관하여 잘못 검출하는 비율이 현저히 적었으며, 영상을 완전 복호화한 후 에지를 구하여 장면 전환 검출을 하는 방법에 비해 약 5-6배 속도가 빠름을 확인할 수 있었다.

• Electronics and Telecommunications Trends
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• v.8 no.2
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• pp.14-31
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• 1993

DRAM은 거의 20여년 동안 반도체산업의 기술 원동력이었으며, 앞으로도 10여년 이상은 계속 그러하리라고 본다. 우리나라의 반도체 산업은 주로 DRAM 부문에 집중되어 있다. '92년에 단일 품목으로 세계 반도체 시장의 약 25%를 점하였으며, 특히 미국에 대한 수출은 약 8억 5천만 달러에 이르는 등 우리나라 수출 및 전자산업에서 차지하는 비중은 대단히 높다. 세계적인 주요 반도체 대기업들은 상호동맹관계를 형성하거나 덤핑제소 등으로 우리의 능력을 약화시키려고 한다. 우리는 이러한 국제적 동향에 능동적이고 적극적으로 대처하여야 한다. 본고는 과기처 특정연구사업으로 미국측에 위탁과제로 수행하고 있는 내용 중에서 현재 세계 반도체산업의 기술추세 및 당면하고 있는 중요한 몇가지 문제점들을 살펴보고 우리가 취해야 할 몇가지 방향을 제시하였다.

• International Commerce and Information Review
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• v.11 no.3
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• pp.145-165
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• 2009

Nowadays, economic growth of China has become an important issue. Due to the demographic position and the market size, China-Korea trade relationship has grown tremendously and significantly. The Chinese relationship with the Korean industry has considerably increased over the years. Various trade competitiveness indices such as TSI, MRCAI, and IITI have been applied to measure the competitive advantage and the complementary of market structure between these two countries. For this purpose, the dataset from the year 2000 to 2008 provided by KITA were used. The MRCAI result show that Korea has specialized in the product of semiconductor, communication equipment, precision machine, automobile, and nonferrous metal. The intra-industry trade level of Korean manufacturing industry is rising in line with the dominance of vertical intra-industry trade(VIIT) trend.