• Journal of the Korean Society of Safety
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• v.33 no.6
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• pp.66-76
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• 2018

This study examined the influence of safety leadership on safety behavior, safety climate and accident using meta analysis. Specifically, safety leadership model which incorporated both transformational and active transactional leadership styles was tested using meta analysis. The results showed that both transformational and active transactional leadership had a positive relationship with safety compliance and participation behavior, and organizational safety climate. However, both leadership styles had a negative relationship with accident. In addition, transformational leadership had significant greater effects on safety behaviors and accident than transactional leadership. In contrast, although there were no significant differences, transactional leadership has a greater effect on the safety climate. These findings suggest that active transactional leadership is important in establishing perceived safety climate of employees, whereas transformational leadership is more related with improving employees' safety behaviors. Therefore, in line with the previous studies of safety leadership, a combination of both transformational and transactional styles will be most beneficial for developing organizational safety management program. Based on these results, practical implications and further research in terms of development for safety leadership program are discussed.

• Journal of Agricultural Extension & Community Development
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• v.1 no.1
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• pp.37-45
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• 1994

This study was conducted to investigate the organizational climate of the agricultural extension education agencies and its influence on their educators` attitude toward job in Korea. The specific objectives of the study were 1) to identify the educators` perception of the organizational climate in the agricultural extension education agencies, and 2) to determine whether or not the educators` perception of the organizational climate influnce on their attitude toward job. Organizational climate has bees defined by many scholars as the properties of the social psychological environment perceived by organization members. There are various theoretical interpretations offered by die scholas about the effect of organizational climate upon organization members` behavior. Through a series of the theoretical reviews, this study could draw more than twenty variables in four types of organizational climate which might be perceived by the educators of agricultural extension education agencies and might influence upon their attitude toward job. The data were collected mainly through questionnaires sent to the responsible officers for administering the questionnaires for all adult educators of 30 agricultural extension education agencies randomly sampled from the population of 190 agencies. After data cleaning, a total of 629 responded questionnaires were analyzed for the study. The statistical methods used in the study were percentile, correlation, one way analysis of variance and multiple regression analysis. The two major findings of the study were as follows : 1. The organizational climate of agricultural extension education agencies were classified into four types : 1) democratic-autonomous, 2) cooperative-friendly, 3) achievement-oriented, and 4) bureaucratic-authoritarian. Among these of organizational climates, the cooperative-friendly one was most positively but the bureaucratic-authoritarian one was least positively perceived by the educators. 2. The educators` potion of the organizational climate and their attitude toward job were significantly correlated. The educators` perception of the organizational climate explained 41 percent of the variance of their attitude toward job in a multiple regression analysis In particular, the perception of the achievement oriented type of the organizational climates alone explained 34 percent of the variance of the favorable attitude.

• Journal of Climate Change Research
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• v.6 no.2
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• pp.87-94
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• 2015

To compare changes in winter temperature over South Korea, 30-year average climate data and climate data of recent 10 years (2014~2014) such as mean temperature, daily maximum temperature and daily minimum temperature were analyzed. Also, we set analysis extreme cold waves frequency related to winter such as freezing days, snow days, days with temperature of below -5, and days with temperature of below -10. This process enabled the comparative analysis of winter temperature changes and extreme cold waves frequency related to winter. This study estimated that winter temperature has gradually increased throughout the last five decades, however, the frequency of extreme weather, such as cold waves has also increased.

• Atmosphere
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• v.32 no.1
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• pp.1-15
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• 2022

Recently, Japan's Meteorological Research Institute presented the d4PDF database (Database for Policy Decision-Making for Future Climate Change, d4PDF) through large-scale climate ensemble simulations to overcome uncertainty arising from variability when the general circulation model represents extreme-scale precipitation. In this study, the change of precipitation characteristics between the historical and future climate conditions in the Yongdam-dam basin was analyzed using the d4PDF data. The result shows that annual mean precipitation and seasonal mean precipitation increased by more than 10% in future climate conditions. This study also performed an analysis on the change of the return period rainfall. The annual maximum daily rainfall was extracted for each climatic condition, and the rainfall with each return period was estimated. In this process, we represent the extreme-scale rainfall corresponding to a very long return period without any statistical model and method as the d4PDF provides rainfall data during 3,000 years for historical climate conditions and during 5,400 years for future climate conditions. The rainfall with a 50-year return period under future climate conditions exceeded the rainfall with a 100-year return period under historical climate conditions. Consequently, in future climate conditions, the magnitude of rainfall increased at the same return period and, the return period decreased at the same magnitude of rainfall. In this study, by using the d4PDF data, it was possible to analyze the change in extreme magnitude of rainfall.

• Journal of Wetlands Research
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• v.21 no.spc
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• pp.51-60
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• 2019

In this study, we performed At-site Frequency Analysis(AFA) and Regional Frequency Analysis(RFA) using the observed and climate change scenario data, and the relative root mean squared error(RMMSE) was compared and analyzed for both approaches through Monte Carlo simulation. To evaluate the rainfall quantile, the daily rainfall data were extracted for 615 points in Korea from HadGEM3-RA(12.5km) climate model data, one of the RCM(Regional Climate Model) data provided by the Korea Meteorological Administration(KMA). Quantile mapping(QM) and inverse distance squared methods(IDSM) were applied for bias correction and spatial disaggregation. As a result, it is shown that the RFA estimates more accurate rainfall quantile than AFA, and it is expected that the RFA could be reasonable when estimating the rainfall quantile based on climate change scenarios.

• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.212-212
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• 2017

• The Korean Journal of Applied Statistics
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• v.22 no.6
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• pp.1143-1152
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• 2009

A canonical correlation analysis(CCA)-based method is proposed for prediction of future climate change which combines information from ensembles of atmosphere-ocean general circulation models(AOGCMs) and observed climate values. This paper focuses on predictions of future climate on a regional scale which are of potential economic values. The proposed method is obtained by coupling the classical CCA with empirical orthogonal functions(EOF) for dimension reduction. Furthermore, we generate a distribution of climate responses, so that extreme events as well as a general feature such as long tails and unimodality can be revealed through the distribution. Results from real data examples demonstrate the promising empirical properties of the proposed approaches.

• Journal of Forest and Environmental Science
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• v.35 no.1
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• pp.47-53
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• 2019

This study applies the concept of climate change vulnerability assessment in order to suggest climate change adaptation effects in a quantitative manner, given that previous studies have hitherto rely on qualitative assessment, as climate change adaptive policies are currently being implemented by local governments of Korea. The vulnerability assessment tool used in this study is VESTAP ("Vulnerability assESsment Tool to build a climate change Adaptation Plan"), which was developed by the Korea Adaptation Center for Climate Change (KACCC), and applied to gauge the vulnerability of pine trees to diseases and pests within Chungcheongnam-do. The climate change adaptation project for vulnerability improvement was assessed only in terms of forest disaster prevention and change in regional climate change vulnerabilities within 16 regions of Chungcheongnam-do as the result of 2016 Climate Change Adaptation Project (Forest Disaster Prevention Project). As a result, it was observed that climate change adaptive capacity has improved according to change in the area of forestland with disaster prevention, and the vulnerability indicator decreased, confirming the impact of the climate change adaptation (forest disaster prevention) project. Also, analysis of regional climate change adaptation project scales and change in vulnerabilities allowed us to determine the regional propriety of climate change adaptation (forest disaster prevention) projects launched in 2016.

• Korea Journal of Hospital Management
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• v.26 no.4
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• pp.38-50
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• 2021

Purpose: The purpose of this study was to identify the relation among affect climate, organizational commitment and organizational performance. Methodology: The survey was conducted through online questionnaires from April 28 to May 1, 2020 for workers in medical institutions. Multiple regression analysis and mediating effects test were performed to identify the influence relationship. Findings: The results, based on a sample of 344 workers in medical institutions, indicate that Positive display climate, Positive experiential climate and Authentic experiential climate are positively related to both organizational commitment and organizational performance. We also found that the lemotional sharing has a partial mediation effect in the relationship that positive display climate, positive experiential climate, and authentic experiential climate affect affective organizational commitment. Practical Implications: Emotional sharing is encouraged for hospital's workers, and the authentic experiential climate contributes to improving work efficiency as well as organizational performance.

• Journal of The Geomorphological Association of Korea
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• v.23 no.2
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• pp.83-93
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• 2016

Using a Quaternary sediment sampled from the Gwnahju-cheon various organic carbon analysis have been accomplished. The result helped us to figure out how climate environment has changed through at that time. The analysis outcome, except the analysis of upper section(range of 0 to 50 cm depth), showed that the climate was generally warm and humid at that time. However, even in this result, the climate environment was slight differences, it can be divided into four periods. Period I is from $3,880{\pm}30yr\;BP$ to $3,030{\pm}70yr\;BP$, in which the climate was relatively warm and humid/dry slightly. Period II is from $3,030{\pm}70yr\;BP$ to $2,970{\pm}70yr\;BP$, in which the climate was relatively warmer than period I and the most humid among all period. Period III is from $2,970{\pm}30yr\;BP$ to $2,270{\pm}70yr\;BP$ and refers to the warmest among all periods and also relatively drier/more humid than period I. Period IV which is from $2,270{\pm}70yr\;BP$ to $2,170{\pm}110yr\;BP$ represents the coolest and driest climate compare to other periods, although there is a high possibility of disturbance caused by cultivation activities.