• Journal of Digital Convergence
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• v.19 no.3
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• pp.109-114
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• 2021

This study is to verify the mediating effect of self-efficacy in the relationship between elements of the ERG and organizational attachment. To verify this, a survey was conducted on employees working at companies in Korea and the research found that all three elements of ERG have a significant effect on self-efficacy, and self-efficacy also have a significant effect on organizational attachment. Thus, it was found that self-efficacy played a mediating role in the relationship between the three elements of ERG and organizational attachment. Based on these findings, we present practical implications while also presenting future research directions.

• Journal of Digital Convergence
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• v.19 no.1
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• pp.23-28
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• 2021

This research emphasized that the importance of ERG elements such as existence needs, relatedness needs, and growth needs. Moreover, it focused on verifying the effects of these three elements on organizational attachment through person job fit. In addition, the mediating role of person job fit was clearly identified as a key variable that can lead to organizational attachment. To verify this, an empirical analysis was conducted on workers engaged in state-owned company, service, manufacturing, and distribution industries in Korea. Through empirical analysis, it was found that all three elements of ERG improve person job fit. Furthermore, person job fit was found to increase the level of organizational attachment. Thus, it was found that person job fit played a partial mediating role in the relationship between the three elements of ERG and organizational attachment. This research also identified which element has the strongest influence on person job fit. Through these results, practical implications were presented and future research directions were discussed.

• Journal of Digital Convergence
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• v.20 no.5
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• pp.331-336
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• 2022

This study proved that the importance of Alderfer's ERG theory. it checked the effects of these three elements on organization-based self-esteem through resilience. In particular, the relationship between the ERG and the psychological factors of the members of the organization is investigated. Moreover, we attempt to verify the mediating effect of resilience on the relationship between ERG and organization-based self-esteem. This study was used for analysis a survey on data 265 employees in 10 organizations. The major finding are as follows. it was found that all three elements of ERG was positively effected resilience. Furthermore, resilience was found to improve the level of organization-based self-esteem. Finally, it was found that resilience have played a mediating role on the relationship between the ERG and organization-based self-esteem. In the conclusion, the summary and implications of the study and the future direction of the study were presented.

• Proceedings of the Korea Water Resources Association Conference
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• 2016.05a
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• pp.343-343
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• 2016

기후변화에 따라 우리나라는 연안에 근접한 도시들에서 반복적으로 침수에 의한 재산 및 인명 피해가 나타나고 있다. 이러한 침수에는 크게 3가지 요인이 존재한다. 첫 번째는, 높은 강도의 폭우가 발생하고 증가와 펌프, 우수관 등의 불량으로 인하여 물이 하천으로 배수되지 못하는 내수침수이다. 두 번째는, 설계빈도를 넘는 수위가 발생하여 제방의 부실 등으로 하천이 월류하게 되는 외수범람이 있다. 마지막으로는 해수위가 상승하여 발생하는 해수침수이다. 본 연구에서는 내수침수와 외수범람에 의한 복합적인 침수해석을 하고자 한다. 기존의 연구에서는 각각의 범람요인들에 대해 독립적인 해석으로 개별적인 침수예상도가 산출되었다. 이렇게 개별 선정한 결과를 선형합으로 중첩하는 방법론의 오류 및 부적합성을 검토하고자 한다. HDM-2D(Song. 2011) 모델을 이용하여 내수침수와 외수범람을 복합적으로 모의하고 그 영향을 고려하고자 한다. ERG (Exponentially Growth Rate) 기법에 의한 생성/소멸 기작은 내수침수 해석 모듈에 적용되고 ERG항의 생성도를 범위를 변화시켜서 침수에 대한 민감도를 분석한다. 이를 통해 도시에서의 표고와 수위를 비교하여 침수지역과 비침수지역을 구분하여 침수구역 산정의 정확성을 향상시킨다. 차후에는 내수침수와 외수범람의 개별적인 모의를 통하여 개별 산정한 침수해석값과 복합요인에 의한 침수해석값을 비교하고자 한다.

• Exercise Science
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• v.21 no.1
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• pp.111-120
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• 2012

The purpose of the study was to assess the effects of different cardiorespiratory fitness response to exercise training on cardiovascular disease and adipocytokine release and gene expression in abdominal obesity women. forty eight middle-age women were divided to a exercise-responder (n=34) group (ERG) and a exercise-nonresponder (n=14) group (ENRG) based on cardiorespiratory fitness after exercise training (12weeks, 1200 kcal/week, moderate-vigorous intensity, walking and jogging). Cardiorespiratory fitness was measured using maximal oxygen uptake with metabolic gas analysis and body composition was determined by bioelectrical impedance. We measured lipid and glucose profiles, blood adipocytokines and adipocytokine genes expression in adipose tissue. Waist girth (p=0.040), and %body fat (p=0.031) were significantly decreased in ERG than ENRG. Triglyceride (p=0.023) and systolic blood pressure (0.046) were significantly decreased in ERG than ENRG. Blood leptin (p=0.022) was significantly decrease in ERG than ENRG but leptin gene expression was decreased both groups (p<0.001). These results show that exercise-responder group improved cardiovascular disease risk factors and adipocytokine more than exercise-nonresponder group after exercise training. Moreover, exercise-nonresponders group show that obese indices and blood leptin and leptin gene expression in adipose tissue were decreased despite the failure to improve fitness. Therefore, regular exercise training seems to give health benefits although the failure to improve fitness.

• Women's Health Nursing
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• v.25 no.3
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• pp.315-328
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• 2019

Purpose: The purpose of this study was to explore the components and nature of happiness in middle-aged women in Korea. Methods: Thirty middle-aged women living in metropolitan Seoul and Gyeonggi and Chungcheong provinces agreed to participate in this study. The data were collected through in-depth interviews with the participants in one-on-one settings. The data were analyzed qualitative using Colaizzi's method of phenomenology. Results: The three theme clusters were extracted from the raw data, along with 13 themes and 138 meaningful sentences and phrases. The three happiness theme clusters in middle-aged women were "live healthy for stability," "rule one's mind for harmony," and "activate hopes for self-esteem." The first theme cluster included healthy life, economic stability, physical youth, and positive thought. The second theme cluster included that harmonious family, ruling of mind, my position as invisible person in social relationships, and precious relationships to support. The last theme included the center of one's life is oneself, a sense of accomplishment, self-improvement, recognition of one's worth and rest for one self. The three theme clusters were associated with the existence, relatedness, and growth (ERG) of ERG areas, respectively. Conclusions: We conclude that the core components of happiness in middle-aged women are to live healthy and mind-ruled and activate hope. The nature of happiness is egocentric stability in middle-aged women. The results suggest that theme clusters might be used to develop a scale for measuring happiness in middle-aged women. This will be helpful to assess the psychosocial status of middle-aged women in Korea.

• Journal of the Korea Convergence Society
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• v.10 no.3
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• pp.149-155
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• 2019

In this study, the multiplicity of synchronous online class discussion activity is explored at conceptual level. From the cultural-historical activity theory (CHAT), each utterance may be considered as a product of the activity system. Alderfer's ERG theory is employed as another theoretical framework for the study. Based on the subject's existence, relationship, growth needs, their class discussion activities constitute four different dimensions: physical/biological, cultural/institutional, social/relational, and cooperative knowledge construction. It is inherent in individual activities and has a different arrangement according to their interests and situations, and at the same time acts as a factor of cooperation and competition among the participants. Through this, collective discussion activities represent complex and dynamic development patterns.

• Information Systems Review
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• v.20 no.2
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• pp.139-161
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• 2018

As Korea became one of the oldest countries in the world, successful aging emerged as an important issue to individuals as well as to society. This study aims to determine not only the Korean seniors' happiness and unhappiness factors but also the means to enhance their happiness and deal with unhappiness. We collected news articles related to the happiness and unhappiness of seniors with nine keywords based on Alderfer's ERG Theory. We then applied a topic modeling technique, Latent Dirichlet Allocation, to examine the main issues underlying the seniors' happiness and unhappiness. According to the analysis, we investigated the conditions of happiness and unhappiness by inspecting the topics based on each keyword. We also conducted a detailed analysis based on the main factors from topic modeling. We proposed specific ways to increase and overcome the happiness and unhappiness of seniors, respectively, in terms of government, corporate, family, and other social welfare organizations. This study indicates the major factors that affect the happiness and unhappiness of seniors. Specific methods to boost happiness and relief unhappiness are suggested from the additional analysis.

• Proceedings of the Korea Water Resources Association Conference
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• 2017.05a
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• pp.288-288
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• 2017

최근 우리나라뿐만 아니라 세계에서는 기후가 변화함에 따라 다양한 문제들이 발생하고 있으며 복합적인 위험의 증가도 함께 나타났다. 이러한 기후의 변화로 인해 집중 호우가 발생하는 빈도가 많아지면서 여러 요인들의 의한 침수가 반복적으로 나타나고 있다. 침수의 요인으로는 크게 내수침수, 외수범람, 해수범람이 존재하게 된다. 내수침수의 경우는 펌프나 우수관 등의 문제로 제내지 배수 불량이 발생하여 물이 하천으로 배수 되지 못했을 때 발생하게 되고, 외수범람의 경우는 홍수나 폭우에 의해 하천의 수위가 높아져 제방을 월류할 때 발생, 해수범람은 해수위가 상승하여 발생하게 된다. 본 연구에서는 내수침수와 외수범람을 동시에 복합적으로 모의할 수 있는 2차원 동수역학모형인 HDM-2D(Song. 2011)를 확장하여 해수-외수-내수 연계 모듈을 개발하였다. 해수 유동 모의 결과를 별도의 입력 파일로 불러들여 ERG (Exponentially Growth Rate) 기법에 의한 내수침수 해석 모형과 Petrov 안정화 기법 기반 충격파의 해석이 가능한 외부 범람모형의 초기 및 경계조건으로 부여하여 동수역학적 연계 모듈을 구성하였다. 해수의 영향을 고려한 해수-외수-내수 연계 모의를 통해 시간에 따른 연안 도시 침수 발생 양상을 분석할 수 있었다. 본 연구는 기후변화에 따라 복합적인 침수가 많이 발생하는 연안도시 지역에서 침수의 복합원인을 찾아내고 침수 예상도를 작성하여 연안도시에 가해지는 피해를 분석하는데 도움이 될 것으로 판단된다.

• Korean Journal of Ecology and Environment
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• v.34 no.1 s.93
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• pp.9-19
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• 2001

contrasting monsoon between 1993 and 1994 produced an interannual difference in hydrology. Theoretical water residence time (TWRT) in monsoon 1993 averaged 27 d, which was>3 months shorter compared to the TWRT in monsoon 1994. A dominant physical process influencing thermal stratification, water movement, and mixing regime was an interflow current in 1993. During summer 1993, river water plunged to mid-lake (location 27 km) and passed through the 10${\sim}$20m stratum of the reservoir, resulting in an isolation of epilimnetic lake water from advected river water. The interflow disrupted thermal stratification and produced a meta-hypolimnetic warming of >4$^{\circ}C$ downlake, thereby increased a mixing depth (>13 m). In contrast, during monsoon 1994 density currents were not observed and strong thermal stratification occurred in the entire reservoir, resulting in > 2 fold greater thermal resistance (8.2${\times}10^{5}$ erg)compared to 1993 (4.0${\times}10^{5}$ erg). This reservoir was identified as a typical warm monomictic reservoir which showed one mixis during early winter. The timing of overturn, however, differed between the two years as a result of distinct contrast in TWRT and thermal regime; overturn in 1993 occured about one month earlier relative to that in 1994. Hypolimnetic warming was predictable in this system; the variation in discharge accounted (Y = 4.35-0.06X+0.10X$^{2}$, p<0.0001)for 98% of the interannual variation in hypolimnetic temperature. Overall data suggest that thermal stability, the timing of fall overturn, and water residence time in this system are primarily regulated by the intensity of monsoon.