• Korean Journal of Agricultural and Forest Meteorology
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• v.16 no.4
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• pp.274-284
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• 2014

Crops and varieties are mostly affected by temperature, the amount of precipitation, and duration of sunshine. This study aims to identify the weather factors that directly influence to apple yield among the series of daily measured weather variables during growing seasons. In order to identify them, 1) a priori natural scientific knowledge with respect to the growth stage of apples and 2) pure statistical approaches to minimize bias due to the subject selection of variables are considered. Each result estimated by the Panel regression using fixed/random effect models is evaluated through suitability (i.e., Akaike information criterion and Bayesian information criterion) and predictability (i.e., mean absolute error, root mean square error, mean absolute percentage). The Panel data of apple yield and weather factors are collected from fifteen major producing areas of apples from 2006 to 2013 in Korea for the case study. The result shows that variable selection using factor analysis, which is one of the statistical approaches applied in the analysis, increases predictability and suitability most. It may imply that all the weather factors are important to predict apple yield if statistical problems, such as multicollinearity and lower degree of freedom due to too many explanatory variables used in the regression, can be controlled effectively. This may be because whole growth stages, such as germination, florescence, fruit setting, fatting, ripening, coloring, and harvesting, are affected by weather.

• Archives of design research
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• v.17 no.2
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• pp.413-424
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• 2004

This paper defines the telepresence as a particular type of experience, rather than a collection of hardware. Defining telepresence in this way provides a means for examining telepresence in relation to other types of mediated experience. Presence refers to the natural perception of an environment, and telepresence refers to the mediated perception of an environment. Factors influencing whether a particular mediated environment will induce a sense of telepresence include the following: the combination of sensory stimuli employed in the environment, the ways in which participants are able to interact with the environment, and the characteristics of the individual experiencing the environment. Telepresence art invites the people from remote worlds to networked cyber space and creates the experience of 'being there' by making participants control the virtual reality system and receive feedback from their teleactions. It is the way to produce an open and engaging experience that manifests the cultural changes brought about by remote control, remote vision, telekinesis, and real-time exchange of audiovisual information. The principal determinants of telepresence are sensory immersion, sensory fidelity, cognitive fidelity and personal factors. This paper applies the 4 determinants to telepresence art works such as Ken Goldberg's Telegarden, Monika Fleischmann & Wolfgang Strauss' The Home of the Brain, Paul Sermon's Telematic Dreaming, Telematic Vision, Eduardo Kac's Uriapuru, Simon Penny's Traces and Paul Sermon & Andrea Zapp's A Body of Water.

• Management & Information Systems Review
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• v.28 no.4
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• pp.67-92
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• 2009

We examine the effects of investment opportunities, external financing, and cost of debts on the firms' capital investments. The empirical findings indicate that : (1) the firms' investment opportunities positively stimulates corporate capital investments but the effects of investment opportunities on the firms' capital investments decrease as the external financing and cost of debts increase ; (2) the firms' investment opportunities are positively correlated with firms' capital investments but the effects of external financing on the firms' capital investments decrease as cost of debts increase; (3) cost of debts is negatively associated with firms' capital investments and especially in the KOSPI firms, the effects of investment opportunities on the firms' capital investments decrease as cost of debts increase. Our findings suggest that managers' views be different from the policy maker's view and the more firms' internal factors of capital investments be found in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.11
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• pp.814-824
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• 2020

Recently, public interest in air pollutants has increased, and the Korean government and local governments have attempted to improve air quality. This study examined the secondary air pollutant contribution in Ulleung Island, Jeju Island, and Baengnyeong Island and compared the differences between them by analyzing the air pollution level and weather conditions in these regions. The weather conditions of the island regions, such as wind speed, precipitation, and sunshine duration, and the average concentration of air pollutants, such as SO₂, NO₂, CO, O₃, PM₁₀, PM_2.5, were examined. The correlation coefficient between air quality factors of each island region and weather conditions was calculated. Regression analysis was conducted by setting primary air pollutants, SO₂, NO₂, and CO as independent variables, and secondary air pollutants, O₃, PM₁₀, and PM_2.5 as dependent variables to identify the regional contribution and impact. Therefore, the government and local governments should establish air quality management for each island region.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.10
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• pp.55-63
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• 2018

This study was intended to identify path structures through pathway analysis with an emphasis on the cognitive elements that influence the acculturative stress of marriage-based immigrant women. The results of the study were designed to establish a foundation for practical measures and policies to support marriage-based immigrant women to adjust their lives in the culture. This study has established research model on the path structure according to the psychological stress theory as to how social support, coping strategy, and acculturative attitude recognized as a cognitive element of marriage-based immigrant women on the acculturative stress and implement practical verification. In addition, control variables for the use of ages, education level, period of marriage, and income level of socio-demographic variables were analyzed. To obtain data for the study, convenience sampling and snowball sampling of marriage-based immigrant women that resided in the area of C and J were conducted simultaneously through surveys and applied to the analysis of 204 cases. Analysis of the path structure of influence of social support, coping strategies, and acculturative attitudes that were perceived as a cognitive element of marriage-based immigrant women influencing acculturative stress revealed that these factors were specifically weighted towards acculturative. Moreover, comprehensive acculturative attitude was identified as a crucial variable reducing the effects of acculturative stress during the acculturative procedures of marriage-based immigrant women. This assumes that establishing and performing policies supporting co-existence of homeland cultures of marriage-based immigrant women and Korean cultures might be an efficient action for dealing with acculturative stress rather than forcing them to adjust to Korean culture.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.433-442
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• 2020

This study established the relationship between job stress and burn-out syndrome of firefighters. The research targets were 582 firefighters who worked at five fire stations in the D metropolitan city. The survey was conducted using a self-administered questionnaire during the period from July 1st 2019 to September 30, 2019. On the correlation analysis, burn-out showed a significant positive correlation with job stress. On the results of the logistic regression anaylsis, the risk ratio of high levels of burn-out was significantly higher in the very high stress groups than that in the groups with low job stress. According to the multiple regression analysis, the factors having an influence on burn-out were gender, age, the specific level of job career, shift work, the physical burden of work, the sense of satisfaction with the work, consideration for quitting the job and job stress. These findings suggest that the job stress of firefighters is closely related to burn-out. This demands the development and implementation of programs that can properly control and curb the factors of job-stress.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.38-52
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• 2016

This study analyzed effects of Action Learning approach on enhancing learning motivation and improving problem-solving capacity in NCS vocational competency classes of Polytechnic College. Targeted group is B Polytechnic College located in Chungnam, and 53 students in experimental group and 64 students in control group. analysis of data is descriptive statistic analysis and the multivariate analysis of variance (MANOVA) method to study sub factors of learning motivation and problem-solving ability. As a result, Action Learning approach has a great influence on connection, confidence, and satisfaction, among the sub factors of learning motivation. also figured that the approach has positive effects on problem clarifying, cause analysis, alternative developing, planning/practicing, and performance assessment, among the sub factors of problem-solving capacity. Moreover, Polytechnic College's NCS vocational competency classes are desirably required to adopt the approach of Action Learning for their educational method, as it fosters basic competencies, such as understanding of diverse perspectives, communicating, leadership, interpersonal relationship, self-development, coping with conflicts, operating meetings, to be learned while students are doing problem-solving activities under a team-working atmosphere.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.13 no.4
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• pp.1759-1768
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• 2012

The present study was intended to measure the level of fatigue symptoms among nurses working for a university hospital and to reveal its related factors. The self-administered questionnaires were given to 450 nurses during the period from October 1st to 31st, 2010. As a results, the level of fatigue symptoms were 75.1% in normal group, and the high-risk group 24.9%. The level of fatigue symptoms reflected in job stress contents were higher as job demand was higher, and the autonomy of job and the supervisor support was lower. In correlations, fatigue symptoms were found to be in a positive correlation with job demand, whereas in negative correlation with autonomy of job and supervisor support. The adjusted odds ratio of fatigue symptoms on job demand were significantly increased in the high risk group than in low group, but autonomy of job. were significantly decreased in the high risk group than in low group. In conclusion, the study results indicated that the level of fatigue symptoms is independently influenced by job stress contents.

• Korean Security Journal
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• no.59
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• pp.161-188
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• 2019

Not much is known about the factors of North Korean refugees willingness to report crime. Based on the survey of 800 North Korean refugees living in the metropolitan area of South Korea, this study examined the theoretical factors influencing North Korean refugees' willingness of reporting crime. Focusing on the legal cynicism, procedural justice, and the behavior of law theory, this research verified that procedural justice model is most important in explaining their willingness to report crime. Variables under procedural justice model(i.e., perceived fairness of the law, confidence in the law, and perceived necessity of the law) were significant in an expected direction. On the other hand, most of the hypotheses based on social conditions derived from the five types of stratification, morphology, culture, organization, and social control presented by Donald Black (1974) showed no significant effects on the intent to report crime among North Korean refugees. Implications for research and policies were discussed based on the findings.

• Korea journal of population studies
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• v.22 no.2
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• pp.73-96
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• 1999

본 연구의 목적은 1980년대 중반부터 약 10여년 동안 현저한 출생시 성비불균형을 경험한 대구지역의 경산부들을 대상으로 아들을 낳기 위한 노력에 미치는 요인들을 밝히는데 있다. 1998년 4월부터 6월까지의 3개월동안 대구지역의 6개 종합병원에 내원한 임산부들 가운데 출산 경험이 있는 경산부를 대상으로 실시한 설문조사자료를 사용하였으며 경산부의 아들 낳기 노력에 영향을 미치는 요인들을 규명하기 위하여 로지스틱 회귀분석을 도입하였다. 연구결과에 따르면 대구지역의 경산부들은 여성에 대한 성차별을 많이 느끼고 있을 뿐만 아니라 아들 선호의식 역시 상당히 높은 것으로 나타났다. 연구대상자들의 24.7%는 임신 전 아들을 낳기 위한 노력은 한 경험이 있다고 응답하였으며 12.2%는 태아의 선별적 인공유산을 통하여 아들을 낳기 위한 노력을 시도한 경험이 있는 것으로 밝혀졌다. 로지스틱 회귀분석 결과에 따르면 여성에 대한 성차별, 아들선호의식, 자녀 가운데 아들이 없는 경우, 인공임신중절수술 및 연령 등의 요인들이 조사대상자들의 아들을 낳기 위한 노력에 통계적으로 유의미한 영향을 미치는 것으로 밝혀졌다. 이러한 결과로 미루어 보아 대구지역의 출생시 성비가 다른 지역보다 높은 이유는 아들을 선호하고 여성을 차별하는 의식의 기반이 되었던 과거 농경 중심사회의 오랜 전통이 상대적으로 많이 남아있는 보수적인 성향의 결과라 할 수 있다. 뿐만 아니라 이러한 성향이 소자녀관으로 변화된 현대에 있어도 아들 하나는 꼭 낳아야겠다는 강한 집념이 현대 의료기기의 발달 및 보급과 의료인들의 영리추구와 이해관계가 부합됨으로써 생겨난 결과로 볼 수 있다. 시설입소의 인종간 차이를 통제할 때 소수인종노인이 백인노인보다 쉽게 자녀동거에서 단독거주로 이행하는데 이는 소수인종에서 가족부양체계가 불안정함을 의미한다. 또한 빈곤시에 소수인종 노인은 백인노인에 비하여 쉽게 자녀와 떨어져 살게 된다. 이러한 결과는 소수인종 노인에 대한 가족의 지원은 그 가족의 경제적 제약속에서 매우 안정적이지 못함을 시사한다. 못함을 시사한다.로 판단된다.(가솔린, 등유, 경유)로 회수 가능하였다..01 (n=10), 4세포기배는 1.05$\pm$0.09 (n=10)를 나타냄으로써 수정란의 단계마다 $E_2$의 반응 결과가 차이가 남을 알 수 있었다. 4. $E_2$농도 곡선에서 PMSG 처리 후 $E_2$의 혈중농도는 계속적인 상승을 보이다가 배란시기에 최고치를 나타내었으며, 배란 후 다시 감소하여 8세포기에서는 급격한 감소현상이 나타났다. 이후 다시 상실기를 거쳐 배반포기 임신기간동안 $E_2$의 농도가 상승하였다. 5. $E_2$처리 후 세포내 $Ca^{2+}$ 농도변화의 결과로, $E_2$를 처리하지 않은 난자들의 세포내 $Ca^{2+}$ 농도는 836.4$\pm$131.2 (n=10), $E_2$를 처리한 난자들은 1736.4$\pm$192.0 (n=10)로써 유의한 (P<0.05) 차이를 보였다. 이상의 결과로부터 $E_2$처리에 의한 세포내