• Journal of Environmental Science International
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• v.29 no.6
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• pp.643-658
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• 2020

Recent economic and income growth in Korea has caused people to seek healthier and happier lives. Forests are seen as spaces that provide tourism and recreation. The Korea forest service and local governments are developing and designating recreational forests but previous studies on the subject have only covered customer satisfaction and how forests are used. As such, the current study aims to find issues with designation criteria for recreational forests used by Gwangju city in Gyeonggi province and suggest improvements to the system. Site E was deemed the most adequate in evaluations of five candidate site. The criteria used in the evaluations were problematic due to (1) a lack of differentiating power in evaluation items, (2) blanket coverage of score ranges, (3) a lack of additional points for special sites, and (4) unclear evaluation indices. Based on the identified issues, the current study suggests introducing additional points and clearly detailing evaluation indices and items to enhance the evaluation of recreational forest candidate sites.

• Journal of Distribution Science
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• v.19 no.4
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• pp.25-35
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• 2021

Purpose: This study aims to analyze the factors affecting customer satisfaction in the customer reviews of omni-channel, posted on Internet blogs, cafes, and YouTube using text mining analysis. Research, data, and Methodology: In this study, frequency analysis is performed and the LDA (Latent Dirichlet Allocation) is used to analyze social big data to respond to reviewers' reaction to the recently opened omni-channel shopping reviews by L Shopping Company. Additionally, based on the topic analysis, we conduct a sentiment analysis on purchase reviews and analyze the characteristics of each topic on the positive or negative sentiments of omni-channel app users. Results: As a result of a topic analysis, four main topics are derived: delivery and events, economic value, recommendations and convenience, and product quality and brand awareness. The emotional analysis reveals that the reviewers have many positive evaluations for price policy and product promotion, but negative evaluations for app use, delivery, and product quality. Conclusions: Retailers can establish customized marketing strategies by identifying the customer's major interests through text mining analysis. Additionally, the analysis of sentiment by subject becomes an important indicator for developing products and services that customers want by identifying areas that satisfy customers and areas that evoke negative reactions.

• Ocean and Polar Research
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• v.31 no.2
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• pp.167-176
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• 2009

Cobalt-rich manganese crusts on seamounts have received an increasing amount of attention as future resources for Co, Ni, Cu, and Mn. A dearth of detailed information regarding the relevant distribution characteristics, mining technologies, and ore processing technologies, however, has precluded potential evaluations of the technical and economic advantages of these crusts. In the past 4 years, Korea has undertaken a survey of the cobalt-rich manganese crusts in and around the Magellan Seamount and Mid-Pacific Mountains. This paper introduces the preliminary feasibility study of the distribution features and R&D results centered around the development of the cobalt-rich manganese crusts. The evaluation model was developed by modifying the model for the manganese nodules. In addition to considering the geological and geophysical differences between the manganese nodules and the cobalt-rich manganese crusts, an ore dressing subsystem was installed in the model. The mining subsystem is composed of a self-propelled collector--a pipeline with submersible hydraulic pumps for crust lifting. The smelting and chlorine leach method was selected for metallurgical processing. The production scales were established at 2,500t/y of cobalt metal. The production of three metals--cobalt, nickel, and copper--was considered in terms of metallurgical processing. The economic feasibility analyses demonstrated that the payback period was 11.4 years, the NPV was 36M$, and the IRR was 9.6% with the economic factors in the case of a cobalt price of US$ 25/lb. It was also demonstrated in this study that the payback period was 8.6 years, the NPV was 154M$, and the IRR was 14.0% in the case of a cobalt price of US$ 30/lb. This indicates that the approach under consideration appears to offer greater potential given the predicted metal prices.

• Economic Analysis
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• v.17 no.4
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• pp.30-51
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• 2011

Since the previous studies on the effects of trade liberalization implicitly assume that trade liberalization affects economic performance only in any point in time, they inevitably are static. Static evaluations fail to account for cumulative dynamic effects of trade liberalization that affect continuously economic performance. This paper tries to fill this gap of the previous studies in this field, estimating cumulative effects of trade liberalization on economic performance by employing an dynamic version of empirical model. One of important empirical issue is controlling bias from endogeneity. To resolve this problem, this paper employes system GMM that uses lagged first-differences as instruments for level equations and lagged levels as instruments for first-differences equations. It improves upon cross-section estimators because it controls for the potential bias induced by the omission of industry-specific effects and the endogeneity of all regressors. This study investigates the effects of trade liberalization in Korean manufacturing for the period from 1988 to 2005 and finds that cumulative dynamic effects of trade liberalization are present and bigger than static effects.

• Korean journal of food and cookery science
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• v.25 no.1
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• pp.16-24
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• 2009

This study suggested a theoretical research system on the effects of corporate social responsibility in the foodservice industry upon perceived service quality. Self-administered questionnaires were completed by 509 customers and the data were analysed by frequency, factor analysis, reliability analysis, correlation analysis and multiple regression analysis. The primary results are as follows - Three corporate social responsibility (CSR) factors were obtained - economic responsibility, legal.ethical responsibility and philanthropic responsibility. In addition, five factors were obtained from the factor analysis of perceived service quality - tangibility, reliability, responsiveness, assurance and empathy. Correlation analysis showed a significant correlation between the CSR factors and the customers' perceived service quality factors. Multiple regression analysis, to verify the hypothesis, showed that CSR in the foodservice industry had a significant influence upon customers' perceived service quality; therefore, the research hypothesis was adopted. CSR, which had an effect on tangibility out of the minutely-perceived service quality factors, was indicated in the order of economic responsibility, legal ethical responsibility and philanthropic responsibility. Responsiveness, reliability, and assurance were influenced by legal ethical responsibility, economic responsibility and philanthropic responsibility, respectively, in order. Also, empathy was surveyed to be influenced by legal ethical responsibility, philanthropic responsibility and economic responsibility in order. Consequently, customers' evaluations of perceived service quality may be inferred to have positive effects when the customer recognizes whether the foodservice company performs social responsibility.

• Economic and Environmental Geology
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• v.33 no.2
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• pp.117-128
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• 2000

Regional evaluations of slope stability by the failure criterion and by environmental geological factors were conducted. The failure criterion is the general conditions for plane failure which consider the geometrical conditions between geological discontinuities and topographical slope planes. The factor focused in this condiction is dip and dip direction. Geostatics, named semivariogram was used for establishing structural domains in slope stability evaluation by the failure criterion. The influential range was calculated to 6 km in the case of dip direction of dominant joint set and 7 km in the case of dip of the same dominant joint set. Then applying this failure criterion to the study area produced a slope stability map using the established domains and slopes generated by TIN module of ARC/INFO GIS. This study considered another regional slope stability analysis. 5 failure-driven factors 9the unstable slope map, geology, engineering soil, groundwater, and lineament density) were selected and used as data coverages for regional slope stability evaluation by geoenvironmental factors. These factors were weighted and overlayed in GIS. From the graph of cumulatave area (%) and instability index, finding critical points classified the instability indices. The most unstable slopes are located in the southern area of Mt. Eorae, Dabul-ri, and the eastern area of Junkok-ri in the first area is plane failure. Also, the expected orientations of failure are 59/338 and 86/090 (dip/dip direction).

• The Journal of Asian Finance, Economics and Business
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• v.2 no.3
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• pp.23-32
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• 2015

The aim of this work is to study the specifics of demographic processes in the Republic of Kazakhstan and to justify proposals concerning improvement of tendencies and methods of realizations of demographic policy in the country. The following methods have been used in this study: the principles of system approach; methods of statistical and comparative economic analysis, sociological analysis; method of expert evaluations; generalization and system analysis. Statistical method is based on the accountability of statistics office of the Ministry of National Economy of the Republic of Kazakhstan (RK) and on the results of sociological studies. The official statistic information, materials of the population census of the RK, materials of the Ministry of Health and Social Development of RK, data from author's studies, carried out in the Institute of Economy of science committee of Ministry of Education and Science of the Republic of Kazakhstan were used in this study. The conclusion about positive tendencies in demographic processes and about necessity of improvement of demographic policy was made. A number of proposals and recommendations concerning creation of favorable social and economic conditions for improvement of demographic situation, enhancement of institutional basis of demographic policy, forms and methods of its realization considering priorities of future development of Kazakhstan were justified.

• Journal of the Korean Society of Clothing and Textiles
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• v.34 no.2
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• pp.212-225
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• 2010

This study investigates the dimensionality of perceived web site quality for fashion e-retailers to compare the differences in perceived web site quality between Korean and Chinese college students in the identification of the decisive web site quality dimensions for customer satisfaction and repurchase intentions. Data were collected from 300 Korean and 300 Chinese online apparel shoppers. The survey was statistically analyzed by factor analysis, T-test, and regression analysis. The perceived service quality dimensions were identified as product quality, economic efficiency, information quality, site design, and trust. The Chinese college students had significantly higher evaluations than Korean college students on information quality and trust. For Korean college students, product quality, economic efficiency, and trust were the most decisive predictors of customer satisfaction and they have indirect effects on repurchase intentions. For Chinese college students, product quality and information quality were identified as the most decisive predictors of customer satisfaction and they have indirect effects on repurchase intentions. Strategic directions for e-commerce business targeting Korean or Chinese college students are suggested in the conclusion.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.23 no.55
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• pp.97-106
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• 2000

In this paper, we would be searching for the complemental aspects in industrial relations of Korea compared with that of Japan. It is very reasonable that historical, geographical, and especially gene analysis data are almost identical, considering that the general evaluations to the motive of Japan's industry are $\ulcorner$the modernization of the tradition$\lrcorner$. Although it is reported Korea accomplished the high economic growth rate, the economic growth rate(efficiency) could not be continued. This reason looks like that Korean proper(eigen) traits(:Gene-ware) have been oppressed and concealed by social climate such as jealousy, stratagem and hatred, we can find one of this facts in the criminal and complaint numbers as social trust measurement. There are many cases that Korean industry was distorted by the superiority/inferiority relations, for examples, the loss of the native(eigen or proper) resources, a distorted introduction of the production method and the unfolding of the industry which be not related to the characteristics of region. In this reasons, Korean industry could not play the role of Human-ware function which activates Gene-ware or, Gene-Nascence. In this Human-ware aspects, Japanese characteristics, such as $\ulcorner$Getting the basic right$\lrcorner$ and $\ulcorner$Tendency to the origin$\lrcorner$, are to be useful in the Nascence of Gene-ware in Korean industry.

• Nuclear Engineering and Technology
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• v.54 no.5
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• pp.1874-1889
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• 2022

In this study, we evaluate the thermal-hydraulic performance and economics of Printed Circuit Heat Exchanger (PCHE) according to the channel types and associated shape variables for the design of recuperators with Sodium-cooled Fast Reactors (SFRs). To perform the evaluations with variables such as the Reynolds number, channel types, tube diameter, and shape variables, a code for the heat exchanger is developed and verified through a comparison with experimental results. Based on the code, the volume and pressure drop are calculated, and an economic assessment is conducted. The zigzag type, which has bending angle of 80° and a tube diameter of 1.9 mm, is the most economical channel type in a SFR using CO₂ as the working fluid. For a SFR using N₂, we recommend the airfoil type with vertical and horizontal numbers of 1.6 and 1.1, respectively. The airfoil type is superior when the mass flow rate is large because the operating cost changes significantly. When the mass flow rate is small, volume is a more important design parameter, therefore, the zigzag type is suitable. In addition, we conduct a sensitivity analysis based on the production cost of the PCHE to identify changes in optimal channel types.