• Journal of Korea Port Economic Association
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• v.34 no.2
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• pp.51-68
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• 2018

This paper compares the differences in management performance in the logistics market and analyzes the differences in business characteristics depending on the industry types. In addition, the effects of industry types and business characteristics on management performance are examined. The analysis method used is ANOVA and K-means clustering. The implication of the study are as follows. First, in the logistics market in Japan, there was a difference in management performance among the types of industry. The warehousing service type had the highest profitability and stability among all the industry types. Second, differences in business characteristics by industry types were tested. It was found that offshore cargo transportation type was more capital intensive than the other types. In addition, warehousing service type had higher business leadership and credit transaction than others. Third, industry types and clusters based on business characteristics had a significant impact on management performance through interaction effects. For the profitability variables in detail, other clusters had a significant effect between transportation types(onshore and offshore cargo) and warehousing service type. On the other hand, in stability variables, one cluster was effective in all types, which is a characteristic that lowers both capital intensity and business leadership.

• The Journal of the Korea Contents Association
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• v.22 no.2
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• pp.559-577
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• 2022

The purpose of this study was to analyze the influence of Big 5 Personality Traits(Extroversion, Agreeableness, Conscientiousness, Openness to experience, Neuroticism) on the organizational commitment of employees and also to investigate the moderating effect of leadership. To summarize the research results, First, Extroversion, Agreeableness, Conscientiousness, Openness of Big 5 Personality Traits had a positive effect on organizational commitment. Second, transactional, transformational and servant leadership had a moderating effect on the relationship between conscientiousness and organizational commitment. And transactional and transformational leadership had a moderating effect on the relationship between openness and organizational commitment. In Pharmaceutical and Medical Device Companies, it was confirmed that personality traits of employees are important factors that affect organizational commitment and organizational leadership interacts with the personality of employees and affects organizational commitment. This study is meaningful in that it attempted to analyze the moderating effect through quantitative design using the scale for the role of personality factors and leadership individually.

• 한국가스학회:학술대회논문집
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• 2000.09a
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• pp.186-191
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• 2000

• Journal of the Korean Geographical Society
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• v.48 no.6
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• pp.879-896
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• 2013

The assessed land values and housing prices have been widely utilized as a basic information for the land and house trades and for evaluating governmental and local taxes. However, there exists a price difference in actual markets between the assessment level and assessed land values or housing prices. This paper emphasizes the spatial mismatch between the assessed land values and housing market prices and particularly addresses the following two aspects by focusing on spatial effects of the modifiable areal units, which would substantially affect the estimation of the assessed land values and housing prices. First, we examine the spatial distributions of the assessed land values and housing market prices, and the gap between those prices, on the basis of the aggregated spatial units(i.e., aggregation districts). Second, we explore the scale effect of the MAUP(modifiable areal unit problem) generally embedded in estimating the prices of the sampled standard lands and houses, and calibrating the correction index for the land values and housing prices for the individuals. For the application, we analysed the land values and housing prices in Seoul utilizing GIS and statistical software. As a result, some spatial clusters that the housing market prices are significantly higher than the assessed land values were identified at a finer geographic level. Also, it was empirically revealed that the statistical results from the regression of regional variables on the assessed land values for the individuals are significantly affected by the aggregation levels of the spatial units.

• Journal of Environmental Policy
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• v.10 no.2
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• pp.45-60
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• 2011

An aim of this paper is to test four hypotheses on price volatility in the $CO_2$ emission markets focusing on European Climate Exchange(ECX) in the EU Emission Trading Schemes(EU ETS) and Chicago Climate Exchange(CCX). I expect that, due to an influx of market information, a differently designed exchange market would bring a different price volatility, and various types of emission permits in the same exchange market would result in the same effects on the price volatility. Major findings are that the price volatility is same regardless of the types of emission exchange markets and emission permits comparing the rate of returns. However, comparing the GARCH variance, the volatility between ECX EUAs and CCX-CFIs and the volatility between EUAs(CERs) futures and daily futures are different with the exception of the volatility between EUAs futures and CERs futures. In conclusion, the price volatility depends on the types of exchanges and the types of emission permits.

• KIPS Transactions on Computer and Communication Systems
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• v.11 no.8
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• pp.249-258
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• 2022

Since the advent of Bitcoin, various virtual assets have been actively traded through virtual asset services of virtual asset exchanges. Recently, security accidents have frequently occurred in virtual asset exchanges, so the government is obligated to obtain information security management system (ISMS) certification to strengthen information protection of virtual asset exchanges, and 56 additional specialized items have been established. In this paper, we compared the domain importance of ISMS and CryptoCurrency Security Standard (CCSS) which is a set of requirements for all information systems that make use of cryptocurrencies, and analyzed the results after mapping them to gain insight into the characteristics of each certification system. Improvements for 4 items of High Level were derived by classifying the priorities for improvement items into 3 stages: High, Medium, and Low. These results can provide priority for virtual asset and information system security, support method and systematic decision-making on improvement of certified items, and contribute to vitalization of virtual asset transactions by enhancing the reliability and safety of virtual asset services.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.537-548
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• 2016

The amount of format sales of Korean programs in China is increasing rapidly. In particular, Chinese media companies insist not only to buy format bible but also to coproduce with Korean production companies. Korean production staff also rush to go to China by calling of Chinese nig media companies. Therefore, we will study the characteristics of formar sales of Korean variety program in China. For this, we will analyse cases of format sales in China during 7 years and find out the types and process of format sales.

• The Journal of Society for e-Business Studies
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• v.17 no.3
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• pp.43-60
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• 2012

This study reviews the life cycle models considering legal and technical characteristics of personal data respectively. Based on the reviews, this research proposes 'consent and management based model of personal data' which is applicable to the domestic IT companies. The model suggested in this paper has characteristics that 'Consent' and 'Management' factors are ㅁpositively considered, which is overlooked in the other models. The validity of the model is examined by two methods, validation of the model of excellence by contrast of the other models, and 'consent' and 'management' factors cover all the life cycle processes. Using this model, IT companies will be contributed to the analysis of the personal data utilization and the development of IT system protection.

• The Journal of Society for e-Business Studies
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• v.8 no.2
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• pp.23-31
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• 2003

Link-based search engines generate the rank using linked information of related web-documents . HITS(Hypertext Internet Topic Search), representative ranking evaluation algorithm using a special feature of web-documents based on such link, evaluates the importance degree of related pages from linked information and presents by ranking information. Problem of such HITS algorithm only is considered the link frequency within documents and depends on the set of web documents as input value. In this paper, we design the search agent based on better HITS algorithm according to advanced suitability between query and search-result in the set of given documents from link-based web search engine. It then complements locality of advanced search performance and result.

• Fire Science and Engineering
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• v.29 no.6
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• pp.129-138
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• 2015

This study investigates the influence of transformational and transactional leadership styles of commanders in fire service organizations on organizational commitment and job satisfaction. A survey was conducted with the staffs of four fire stations in Gyeonggi Province. The results show that the charismatic characteristics of transformational leadership and the management by exception of transactional leadership positively influence both organizational commitment and job satisfaction. This indicates that the fire officers can be devoted to their organizations and be satisfied with their jobs when their supervisors give directions with charisma and vision and when they delegate authority to the fire officers except in particular situations.