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A Study on Factors Affecting Turnover Intention of Jewelry Distribution Distributor
Lee,Sangki,Lee,Donghae 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-
The purpose of this study is to analyze the components of internal marketing, job satisfaction, organizational commitment and turnover intention in jewelry distribution companies and to verify the relationship among these components. In order to achieve the purpose of this study, a literature survey related to internal marketing, job satisfaction, organizational commitment and turnover intention was carried out, and an empirical analysis was conducted by the use of a questionnaire method among employees in jewelry distribution companies. In the empirical research, a survey was conducted among 210 individuals working at jewelry distribution companies with the results analyzed. Additionally, Cronbach’s α analysis, factor analysis, and regression analysis were conducted by means of SPSS Window ver 18.0. Among internal marketing components of jewelry distribution companies, the two factors - management support and reward system - have positive (+) effect on job satisfaction and organizational commitment while internal communication and education/training have negative (-) effect on employees turnover intention. Jewelry distribution company employees job satisfaction and organizational commitment have negative (-) effect on their turnover intention. Internal marketing of a jewelry distribution company was positively related to job satisfaction and organizational commitment. Internal marketing, job satisfaction and organizational commitment were negatively related to turnover intention
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Donghae LEE Korea Distribution Science Association 2024 Asian journal of business environment Vol.14 No.1
Purpose: The purpose of this research is to explore the macroeconomic model through both static and dynamic equations. The primary objective of this study is to investigate the variations in the elasticity of substitution across changing economic variables within the framework of the Allen-Uzawa production functions. Research, design, data and methodology: The data were drawn from the World Bank's annual central statistical office database from 2010 to 2021 in the United States of America. The level of expenditures and of the public finance sector, macroeconomic data like output, inflation rates, and labor are examined. Results: This study demonstrates the interaction of two equations, clarifying that the macroeconomic model is practical to determining the stability of both static and dynamic equation systems analytically. The Allen-Uzawa equations allow for the verification of macroeconomic model properties, and study results demonstrate an increase in the range of capital uses as a form of mechanization. A constant elasticity of substitution function is derived from the macroeconomic variables. Conclusion: The macroeconomic model, though the analysis of the static and dynamic Allen - Uzawa model, not only facilitates the examination of long-term trends in crucial endogenous variables but also overcomes challenges commonly associated with other mathematical methods. Overall, the analysis promotes economic growth, investment, and employment. The levels of expenditures and the public finance sector, along with macroeconomic data such as output, inflation rates, and labor, are examined.
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Ozone Inactivation of Listeria monocytogenes
LEE, DONGHA 中央大學校 食糧資源硏究所 1998 食糧資源硏究所 論文集 Vol.10 No.1
The effect of ozone against L. monocytogenes were evaluated by measuring cell death, phase growth sensitivity and influence of temperature on killing. The test strains were L. monocytogenes 10403s (wild type), 1370 (CA-negative mutant), and DHL1 (SOD-negative mutant). The obtained residual ozone levels were 0.3, 0.25 and 0.19mg/L at 4, 25 and 35℃, respectively. From enzyme assay, strain 1370 overproduced SOD by one fold compared to wild type as a compensation for lacking CA, whereas no overproduction of CA was observed in strain DHL1. All test strains were inactivated rapidly upon ozone exposure. An average of 3-4 log reduction for strain 10403S, a 4-5 log reduction for strain 1370, and a 5-6 log reduction for strain DHL1 was observed in the first 2-4 min of ozone exposure. A greater killing rate was achieved as the listerial culture was exposed at low temperature medium. Early stationary and mid-log phase cells exhibited greater ozone resistance than late stationary phase cells. The growth phase sensitivity to ozone was directly correlated to the CA and/or SOD activity of cells from each phase of growth. A biphasic death curve was observed during cell inactivation. From the comparison of cell inactivation rate and CA and/or SOD activity between wild type and two mutant strains, it was concluded that SOD was the enzyme responsible for ozone resistance. The hypersensitivity of the SOD-negative strain to ozone exposure indicated that L. monocytogenes requires SOD for survival under oxidative stress as a trigger of the detoxification process.
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Lee, Dongha,Jang, Changwon,Park, Hae-Jeong Elsevier 2019 NeuroImage Vol.188 No.-
<P><B>Abstract</B></P> <P>During brain modulation, repeated mental practice may not always result in efficient learning. Particularly, the effectiveness of mental motor practice depends on how well one induces neural activity in a desired state consistently across mental trials, which calls for feedbacks to adjust one's performance. We hypothesized that even a brief experience of neurofeedback learning enhances trial-by-trial neural pattern consistency during subsequent mental motor execution and that this experience would change recruitment of functional connectivity in the motor imagery and default mode networks. To test this hypothesis, we conducted an experiment with two sessions of mental motor practice before and after a neurofeedback training session, in which participants conducted four types of first-person mental motor execution tasks (walking forward, turning left, turning right, and touching a tree). During the neurofeedback training session, in which participants conducted a virtual navigation game, 10 experimental participants received real-time fMRI neuro-feedbacks, while 10 control participants simply repeated the same mental task according to given cues without feedbacks. The experimental group showed significantly higher effects of neuro-feedback training on trial-by-trial consistencies and classification accuracies of activated neural patterns than the control group. Task-performing global node strength and network efficiency were increased in the motor imagery network but decreased in the default mode network only in the experimental group. These results demonstrate that even a brief experience of feedback learning is more effective than simple practice repetitions without evaluation, which was reflected in increased neural pattern consistency and task-dependent functional connectivity during a mental motor execution task.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Mental motor execution can be expedited by an experience of feedback learning. </LI> <LI> Feedback learning enhances trial-by-trial neural consistency of mental practice. </LI> <LI> Feedback learning increases the task-dependent motor imagery network efficiency. </LI> <LI> The task-related default mode network is disintegrated after feedback learning. </LI> <LI> A feedback experience is effective in neural plasticity than simple repetitions. </LI> </UL> </P>
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Donghae LEE 한국유통과학회 2024 Asian Journal of Business Environment (AJBE) Vol.14 No.1
Purpose: The purpose of this research is to explore the macroeconomic model through both static and dynamic equations. The primary objective of this study is to investigate the variations in the elasticity of substitution across changing economic variables within the framework of the Allen-Uzawa production functions. Research, design, data and methodology: The data were drawn from the World Bank's annual central statistical office database from 2010 to 2021 in the United States of America. The level of expenditures and of the public finance sector, macroeconomic data like output, inflation rates, and labor are examined. Results: This study demonstrates the interaction of two equations, clarifying that the macroeconomic model is practical to determining the stability of both static and dynamic equation systems analytically. The Allen-Uzawa equations allow for the verification of macroeconomic model properties, and study results demonstrate an increase in the range of capital uses as a form of mechanization. A constant elasticity of substitution function is derived from the macroeconomic variables. Conclusion: The macroeconomic model, though the analysis of the static and dynamic Allen - Uzawa model, not only facilitates the examination of long-term trends in crucial endogenous variables but also overcomes challenges commonly associated with other mathematical methods. Overall, the analysis promotes economic growth, investment, and employment. The levels of expenditures and the public finance sector, along with macroeconomic data such as output, inflation rates, and labor, are examined.
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Donghae LEE 한국유통과학회 2022 The Journal of Industrial Distribution & Business( Vol.13 No.12
Purpose: This research investigates the paths of some important economic variables: government domestic product (GDP), capital accumulation, unemployment rates. Decreasing GDP, declining capital accumulation and higher unemployment affect to South Korea economy. The macroeconomic policies discussed are all capital financed accumulation policy and an enactment of unemployment regulation. Research design, data and methodology: The GDP, capital accumulation rates and unemployment rates are the main macroeconomic issues in the South Korea. This research studies the correlations of the GDP, capital accumulation, and unemployment rates by time series data from 2000 to 2005 in a Vector Autoregressive (VAR). Results: The first, GDP relates a positive effect between the GDP and capital accumulation in the long term. The second, there is the negative relationship between GDP and unemployment rates. Economic growth was strongly supported by employment growth and by declining unemployment. The third, There is positive relationship between unemployment rates and capital accumulation. Conclusions: This research provides that fiscal policy introduce to increasing GDP, private investments and employment rates. The GDP should be major on capital accumulation to increase employment rates in South Korea.
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