• Environmental and Resource Economics Review
• /
• v.24 no.4
• /
• pp.629-655
• /
• 2015

Nuclear power generation is a major power source which accounts for more than 30% of domestic electricity generation. Electricity market needs to secure stability of base load. This study aimed at analyzing relationships between nuclear power generation and wholesale electricity price (SMP: System Marginal Price) in Korea. For this we conducted ARDL(Autoregressive Distributed Lag) approach and Granger causality test. We found that in terms of total effects nuclear power supply had a positive relationship with SMP while nuclear capacity had a negative relationship with SMP. There is a unidirectional Granger causality from nuclear power supply to SMP while the reverse was not. Nuclear power is closely related to SMP and provides useful information for decision making.

• Journal of Korean Clinical Nursing Research
• /
• v.23 no.1
• /
• pp.110-119
• /
• 2017

Purpose: The purpose of this study was to test validity and reliability of the Korean-Sieloff King Assessment of Group Outcome Attainment within organization in Korea (K-SKAGOAO), and also to explore the relationship of Korean nursing group power and job satisfaction, organizational commitment, organizational performance. Methods: Participants were 481 nurse managers, nurse unit managers or staff nurses with over 7 years experience. Data were collected by post mail and analyzed using descriptive statistics, ANOVA, Kruskal-Wallis test, Tukey test, and Spearman's correlation. Results: Content Validity Index was over .82 and Cronbach's ${\alpha}$ coefficient for the K-SKAGOAO was .97. The mean score for Korean nursing group power was 136.77 among the total participants, 139.89 among nurse managers, 136.74 among nurse unit managers and 132.47 among staff nurses. These results showed high nursing group power in Korea nursing organization in hospitals. There was also a significant difference according to nurse position (p=.003). Korean nursing group power was positively related to job satisfaction, organizational commitment, and organizational performance. Conclusion: Findings show that the K-SKAGOAO has validity and reliability. Nursing groups can use the K-SKAGOAO to evaluate the nursing group power of each nursing organization and to develop strategies to improve nursing power and nursing outcomes.

• Science of Emotion and Sensibility
• /
• v.25 no.2
• /
• pp.87-100
• /
• 2022

People who spend more time alone tend to report higher levels of loneliness. However, whether people experience loneliness in solitude can differ The current research investigated the role of a sense of power as a predictor of loneliness among people who lack social interaction. investigated factors predicting loneliness in people with little social time large-scale survey data. As a result of discriminant analysis, a sense of power was verified as a factor that lonely non-lonely groups. a sense of power As a result, a causal relationship between a sense of power and social loneliness was confirmed. When people feel alone, a high sense of power can work as a buffer against loss of belongingness and the experience of social loneliness. This research focused on psychological rather than situational factors to alleviate loneliness in the current situation where social encounters are limited due to the increase of single-person households and the 19 pandemic.

• Journal of Electrical Engineering and Technology
• /
• v.11 no.6
• /
• pp.1571-1581
• /
• 2016

A novel method is proposed to construct the voltage stability boundary of power system considering different Reactive Power Control Mode (RPCM) of Doubly-Fed Induction Generator (DFIG) Wind Power Plant (WPP). It can be used for reflecting the static stability status of grid operation with wind power penetration. The analytical derivation work of boundary search method can expound the mechanism and parameters relationship of different WPP RPCMs. In order to improve the load margin and find a practical method to assess the voltage security of power system, the approximate method of constructing voltage stability boundary and the critical points search algorithms under different RPCMs of DFIG WPP are explored, which can provide direct and effective reference data for operators.

• Research in Mathematical Education
• /
• v.9 no.2 s.22
• /
• pp.115-124
• /
• 2005

Traditional mathematics education research is based on mathematics and psychology, but its function is limited. In the end of the 1980's, the social research of mathematics education appeared. The research views are from sociology, anthropology, and cultural psychology, and then it is an exterior research. The social research considers the relations, power, situation, context, etc. This paper analyzes the power relationship in mathematics classroom. Firstly, the power is defined. The meaning of the power is the foundation of this paper. Secondly, the power relationships in mathematics classroom are analyzed. The traditional mathematics classroom and collaborative learning classroom are considered. Thirdly, the paper analyzes the power resources and finds the some important factors that affect the power distribution.

• Science of Emotion and Sensibility
• /
• v.16 no.4
• /
• pp.433-444
• /
• 2013

The purpose of this study is to investigate the moderating role of emotional intelligence (EI) and goal-relevance in the relationship between power and emotional awareness. In Study 1, participants were ask to correctly indicate presented facial expressions of others after completing EI survey. Half of the participants were randomly assigned to the "power" condition and the other half to the "powerless" condition. In Study 2, goal-relevance of expressed emotion was manipulated. The results showed that EI moderated the relationship between power and emotion decoding ability. While participants with high and low levels of EI were not significantly affected by power condition, participants with middle level of EI were strongly influenced by the effect of power. In addition, the role of goal-relevance significantly moderated the relationship between power and emotional awareness. When correctly indicating other's emotion became important and thus emotional awareness was strongly associated with participants' goal, those who had power performed better than before.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.17 no.4
• /
• pp.454-463
• /
• 2016

This study examined the degree of climacteric symptoms, hardiness and middle-life crises. The survey period was from 25 May to 10 September, 2013 with workers in small business workplaces in Jeonnam. The data was collected by a self-questionnaire and SPSS Win 18.0 was used for data analysis. As an accounting hierarchical analysis result, middle-life crisis was affected by exercise, and the relationship with the spouse and child with an explanatory power of 25.1%. Additional input climacteric symptoms showed more explanatory power (21.1%). In addition, exercise, education, relationship with the spouse, relationship with child, income, and climacteric symptoms were predictors of a mid-life crisis with explanatory power of 42.7%. Therefore, to successfully overcome mid-life crises, a range of nursing interventions should be provided to make a positive self-control and intimate relationship with the spouse of middle-aged men.

• Proceedings of the KIEE Conference
• /
• 2004.11c
• /
• pp.535-537
• /
• 2004

The flame image processing and it's analysis system has been developed for optimal coal firing of thermal power plant, especially for reducing NOx and safe operations. We aimed at gaining the relationship between burner flame image, emissions of NOx and LOI(Loss on ignition) in furnace by utilizing the flame image processing methods. And the relationship determines quantitatively the conditions of combustion on the individual burners. The test was conducted on Samchonpo thermal power plant #4 unit(560MW) of KOSEP which has 24 burners. The system simplified the burner adjustment works in accordance with the real time trending of flame behavior like NOx profiles and unburned carbon profiles for individual burners. But, This kind of conventional method increases the cost as the number of burner are increased. Also there is a difficulty to measure exhausted gas of each burner because of measurement errors. This paper intends to propose the useful "Flame Monitoring System" that can find Low NOX and LOI at the upper furnace and to compare with the conventional System.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
• /
• v.18 no.5
• /
• pp.105-111
• /
• 2004

This paper shows that active and reactive power load have significant positive relationship and there exist two types of relationship between them using Test Statistics. In investigating the cross plots at every hour, we found out that from 0 to 8 hours, there relationships are linear, while from 9 to 23 hours, they are two piece-wise linear. Also, reactive power loads was estimated and forecasted using active power load as the explanary variable with OLS (Ordinary Least Squares) regression methods. MAPE (Mean Absolute Percentage Error) for each model is calculated for one-hour ahead forecasting.

• Journal of Biomedical Engineering Research
• /
• v.33 no.3
• /
• pp.135-140
• /
• 2012

Previous investigators have shown that the frequency compression is related to the muscle fatigue and the decreasing conduction velocity of muscle fibers. The aim of the present study was to investigate the relationship between endurance times and frequency parameters such as mean power frequency and median frequency in the surface EMG signal during isotonic contractions. Eight healthy subjects performed voluntary isotonic contractions of biceps Brachii muscle until their endurance times which were determined when the subject could no longer follow the contraction cycle. The regressive slopes of mean power frequency and median frequency were used to describe the frequency compression of the surface EMG signal, and to test the predictability of endurance time. As results of experiment, significant correlations were found between endurance time and the regressive slopes of mean power frequency and mean frequency computed over 50%Tend of endurance time.