• Journal of Navigation and Port Research
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• v.39 no.4
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• pp.361-370
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• 2015

Wind energy began to receive attention as a new alternative fuel since 20 years ago and is growing as a booming global business model. Global wind power generation in the world has been continuously increasing for the past 10 years, accounting for over 30% of cumulative rate compared to total power generation. Global demand for wind power generation is gradually expanding due to restriction on carbon emission and environmental problems caused by increased greenhouse effect. Accordingly in this study, current transportation routes are classified into three types including access-priority route, economics-priority route, and convenience- priority route depending on distribution characteristics of wind power equipment in order to suggest transportation methods other than ships. The three types of transportation route that this study declared can make the Wind power equipment manufacturing companies can judge not only the duration of transportation but also effectiveness and economic feasibility. It means that the manufacturers can analyze and compare the effectiveness and economic feasibility, which are proceed by the shipping company and freight forwarder until now days.

• Journal of Navigation and Port Research
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• v.35 no.5
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• pp.445-454
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• 2011

According to financial hub related law of government, new financial hub in Busan will be differentiated from existing other financial hubs by reflecting regional characteristics as financial cluster and by connecting with business hub. Based on an ongoing busan international finance center in Munhyun innovation city. this study is focused on suggesting development methodes for international competitiveness of Busan international finance center considering of maritime-specialization connecting with citizen park and busan north port renewal districts. through the financial hub concept, types, be valid conditons, competitiveness and international case studies over the analysis of development conditions and a development plans for developing fosterage-programs suppementary and strategy, guidelines of physical developmentde direction.

• Journal of Intelligence and Information Systems
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• v.19 no.1
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• pp.1-17
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• 2013

In this article, several types of hybrid forecasting models are suggested. In particular, hybrid models using the generalized additive model (GAM) are newly suggested as an alternative to those using neural networks (NN). The prediction performances of various hybrid and non-hybrid models are evaluated using simulated time series data. Five different types of seasonal time series data related to an additive or multiplicative trend are generated over different levels of noise, and applied to the forecasting evaluation. For the simulated data with only seasonality, the autoregressive (AR) model and the hybrid AR-AR model performed equivalently very well. On the other hand, if the time series data employed a trend, the SARIMA model and some hybrid SARIMA models equivalently outperformed the others. In the comparison of GAMs and NNs, regarding the seasonal additive trend data, the SARIMA-GAM evenly performed well across the full range of noise variation, whereas the SARIMA-NN showed good performance only when the noise level was trivial.

• Review of Culture and Economy
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• v.21 no.3
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• pp.3-30
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• 2018

The purpose of this study is to investigate the effects of participation in cultural activities on happiness. The empirical results show that participation in cultural activities has a positive impact on individual happiness, because cultural activities cause entertainment and social contacts with people. Furthermore, the levels of income and education are analyzed by dividing them into high and low groups. Noteworthy is that the low-income and less-educated groups show lower participation in cultural activities than those in the high-income and well-educated groups, But the utility magnitude gained through cultural activities is higher. This implies that opportunity costs arising from financial and time constraints are greater in the low-income and less-educated groups than in the high-income and well-educated groups. Finally, for the low-income group, the marginal utility is reduced when spending on cultural activities exceeds certain levels, which means there exist a budget constraint for the low-income group.

• Review of Culture and Economy
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• v.21 no.2
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• pp.3-28
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• 2018

This study focuses on analyzing the glass ceiling effect in arts and culture professionals through the quintile decomposition applied to the RIF unconditional quantile regression and Oaxaca-Blinder decomposition technique. From the industrial viewpoint, we divide arts and culture professionals into cultural contents professionals(large category J industry) and arts professionals(large category R industry). For our analysis, we employ the pooling data of 'Wage Structure Survey' from 2009 to 2016. Our results are summarized as follows. First, as OLS wage decomposition showed that the gender wage gap among the arts professionals was lower than cultural contents professionals, but the discrimination portion of total gender wage gap was larger. Second, from quintile regression decompositions, the glass ceiling effects of two types of professionals showed different results. Cultural contents sector was observed with the "steady glass ceiling effect" as the portion of the discrimination was continuously increased, while the arts sector was observed with the "limited glass ceiling effect" as the discrimination had drastically increased in the 80s and 90s.

• Journal of Digital Convergence
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• v.17 no.11
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• pp.163-170
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• 2019

A new revenue recognition standard was adopted in 2018. The purpose of this paper is to analyse how K-IFRS 1115 'Revenue from Contracts with Customers' affects the revenue recognition of the telecommunication firms and to suggest a regulatory policy for the telecommunications industry. It shows identifying performance obligations for bundles, determining the transaction price and allocating the transaction price to the performance obligation and how to account for it using case study. The most important change in the telecommunication companies's revenue is to allocate the transaction price to two performance obligations: telecom services and mobile handset sales. As a result, sales revenue are expected to drop en masse. This study provides important implications for the regulatory accounting policy of the telecommunications industry.

• Journal of Convergence for Information Technology
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• v.7 no.2
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• pp.125-130
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• 2017

In the business environment of the modern society, it is not possible for the company, which is a producer of accounting information, to provide accounting information to the users of accounting information because it can not satisfy the information demand of the accounting information users due to the problem of information asymmetry. Therefore, the purpose of this study is to find out what information should be provided for satisfying the information needs of users of accounting information. This study investigates the qualitative characteristics of accounting information based on K-IFRS in the provision of accounting information and conducts empirical studies based on the users of accounting information of listed companies and unlisted companies. And how to improve the satisfaction. As a result of empirical research, it was confirmed that the accounting information satisfying the qualitative characteristics is useful for meeting the information needs of users of accounting information.

• Journal of Convergence for Information Technology
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• v.8 no.3
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• pp.99-105
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• 2018

The purpose to this study is to analyze the difference of trust toward Internet-only bank into two groups according to the gender. We specially examined whether there is any gap in the determinant of trust. For this, we attempted to analyze the significance of the difference in the path coefficients between the gender through latent mean and path analysis. As a results, the difference of the determinant of trust between the male and the female group occurred in the factor of benefit and security. Moreover, it reconfirmed that trust are later strongly extended to relationship commitment. These findings suggest that it's very important to establish a trust with customers.

• Journal of Digital Convergence
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• v.19 no.12
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• pp.207-223
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• 2021

The purpose of this research is to study the influence of online shopping motives on repurchase intentions with Chinese students studying in South Korea. To this end, a questionnaire survey was conducted with 255 Chinese students studying abroad. The SPSS 23.0 analysis clarified the structural relationship between the online shopping mall's motivation and customer satisfaction, and repurchase intentions. First, in the motivation of online shopping, product perception, customer service and shopping experience have a positive impact on customer satisfaction. Second, in the motivation of use, product perception, customer service, and shopping experience have a positive impact on repurchase intentions. Third, satisfaction has a positive effect on repurchase intentions. The results show that the motivation of using online shopping for Chinese students in South Korea is an important factor affecting satisfaction and repurchase intentions. In future research, further research is needed according to the type of online shopping mall.

• Tuberculosis and Respiratory Diseases
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• v.84 no.1
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• pp.35-45
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• 2021

Globally, cardiovascular diseases and chronic obstructive pulmonary disease (COPD) are the leading causes of the non-communicable disease burden. Overlapping symptoms such as breathing difficulty and fatigue, with a lack of awareness about COPD among physicians, are key reasons for under-diagnosis and resulting sub-optimal care relative to COPD. Much has been published in the past on the pathogenesis and implications of cardiovascular comorbidities in COPD. However, a comprehensive review of the prevalence and impact of COPD management in commonly encountered cardiac diseases is lacking. The purpose of this study was to summarize the current knowledge regarding the prevalence of COPD in heart failure, ischemic heart disease, and atrial fibrillation. We also discuss the real-life clinical presentation and practical implications of managing COPD in cardiac diseases. We searched PubMed, Scopus, EMBASE, and Google Scholar for studies published 1981-May 2020 reporting the prevalence of COPD in the three specified cardiac diseases. COPD has high prevalence in heart failure, atrial fibrillation, and ischemic heart disease. Despite this, COPD remains under-diagnosed and under-managed in the majority of patients with cardiac diseases. The clinical implications of the diagnosis of COPD in cardiac disease includes the recognition of hyperinflation (a treatable trait), implementation of acute exacerbations of COPD (AECOPD) prevention strategies, and reducing the risk of overuse of diuretics. The pharmacological agents for the management of COPD have shown a beneficial effect on cardiac functions and mortality. The appropriate management of COPD improves the cardiovascular outcomes by reducing hyperinflation and preventing AECOPD, thus reducing the risk of mortality, improving exercise tolerance, and quality of life.