• Journal of Korean Society for Atmospheric Environment
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• v.19 no.6
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• pp.805-810
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• 2003

The annual air pollution emissions from construction and agricultural equipments were estimated from 1987 through 2000. The annual numbers and operation hours of 5 major construction equipments (Excavator, Bulldozer, Loader, Fork lift, Crane) and 3 major agricultural equipments (Power Tiller, Agricultural Tractor, Combine) were investigated for emission estimation. And monthly variation factors of operation hours of construction equipment were investigated too. The NO$_{x}$ emission from construction equipment have been gradually increased since 1987 to 1997, but sharply decreased as -45％ in 1998 due to economic crisis in Korea. The NO$_{x}$ emission was estimated as 64,300 ton/year from construction equipment, and as 23,300 ton/year from agricultural equipment in 2000.000.

• Journal of the Korean Professional Engineers Association
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• v.44 no.2
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• pp.34-38
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• 2011

Foot and mouth disease (FMD) is a highly contagions disease of cloven-hoofed animals and occurs in many non-European countries, in particular in huge parts of Asia including Turkey, in most countries of Africa and in parts of South America. The extreme contagiousness of the disease requires comprehensive to control an outbreak, causing high economic losses. The outbreak of FMD, which affects livestock including cattle, swine,sheep,goats,deer and other animals as a highly communicable disease that affects. The agency issued a statement noting that FMD disease does not spread to humans. The disease and meat from infected animals are news reports that more than 3.400.000 livestock have been ordered slaughtered so far across the country.

• Environmental and Resource Economics Review
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• v.9 no.5
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• pp.973-997
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• 2000

The carbon tax is one of several measures to reduce the green-house gases emitted from burning the fossil fuels, which has been much discussed internationally. The analyses of the effects of a carbon tax on individual countries have been carried out by applying the computable general equilibrium(CGE) models, especially models with the assumption of non-existence of scale economies. However, the introduction of scale economies to CGE models changes the simulation results drastically. In this paper, two CGE models are used to compute and compare the economic and $CO_2$ reduction effects of a carbon tax, one of with is the model with scale economies and the other is without scale economies. One of main results is that the analysis using the CGE model without scale economies may underestimate the effects of a carbon tax on GDP and reducing the emission of $CO_2$.

• The Journal of Asian Finance, Economics and Business
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• v.6 no.4
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• pp.297-307
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• 2019

Despite the fact that the implementation of 5% rule is widely recognized to enhance the transparency of capital market and fairness of corporate governance market, a few evidences present information effect of 5% rule. Using 7,088 non-financial firm-year observations listed on the Korea Stock Exchange from 2006 to 2012, we analyze the relation between trading volume and 5% rule disclosure. The results show that the daily and abnormal trading volume is increased when 5% rule disclosure is released. Moreover, the trading volume is significantly increased during cooling period. Specifically, trading volume is significantly greater when one day before cooling period or the expiration day of cooling period. We also find the information effect of firms with stable ownership structure before 5% rule disclosure is relatively smaller than the firms with unstable ownership structure with unstable ownership structure. These results imply that capital market participants use the information from 5% rule disclosure and reflect in their real economic decision.

• Journal of Integrative Natural Science
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• v.13 no.3
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• pp.105-113
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• 2020

As the COVID-19 outbreak has prolonged, social distancing movements are encouraged and non-face-to-face lifestyle trends are spreading. As a result, it is necessary for general restaurants and small marts to provide delivery services like large-scale distribution companies. Large distribution companies have also suffered significant economic losses from COVID-19 because epidemiological investigations were conducted after the distribution center was closed due to the outbreak of COVID-19 in several large domestic distribution companies. In this thesis, in order to examine whether COVID-19 actually affects distribution companies, we attempt to understand the relationship between the number of confirmed cases per month and the sales share and growth rate by categories of distribution companies.

• Journal of the Korean Society for Railway
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• v.9 no.5 s.36
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• pp.577-581
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• 2006

Urban transit operation corporations perform repetitive work to investigate the EMU, electric multiple unit, by some fixed maintenance cycle. The quality of maintenance work usually depends on workers' know-how. Though some information to support the maintenance work is digitalized and provided to workers, it is not great help to them because of its non systematic structure. The information includes drawings, manuals, work results, work history, fault history, etc. The maintenance workers want to access the information anytime anywhere, and make an effect to promote the efficiency of maintenance for EMU. But it is difficult to achieve that without some structured information system which is able to use in work area. So we develop maintenance information system for EMU for about 4 years from 2002 to 2005. In this paper we present the configuration and characteristics of this system, and the results of the evaluation test. We install the system in two depots, Changdong and Jichuk, belonged to SeoulMetro to evaluate its efficiency and estimate its economic benefits.

• Health Policy and Management
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• v.12 no.3
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• pp.54-76
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• 2002

This study investigated how much EVA which evaluate firm's value can explain hospital bankruptcy prediction as a explanatory variable including financial indicators in Korea. In this study, artificial neural network and logit regression which are traditional statistical were used as the model for bankruptcy prediction. Data used in this study were financial and economic value added indicators of 34 bankrupt and -:4 non-bankrupt hospitals from the Database of Korean Health Industry Development Institute. The main results of this study were as follows: First, there was a significant difference between the financial variable model including EVA and the financial variable model excluding EVA in pre-bankruptcy analysis. Second, EVA could forecast bankruptcy hospitals up to 83% by the logistic analysis. Third, the EVA model outperformed the financial model in terms of the predictive power of hospital bankruptcy. Fourth, The predictive power of neural network model of hospital bankruptcy was more powerful than the legit model. After all the result of this study will be useful to future study on EVA to evaluate bankruptcy hospitals forecast.

• Asia pacific journal of information systems
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• v.8 no.3
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• pp.165-180
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• 1998

In this study, we analysed the current situation of Internet-based insurance services which can provide a non-traditional and cost effective communication channel between the customers and insurance companies. The service of Internet-based cyber-insurance extends from mere advertisement to on-line contracts through planning simulations and, furthermore, to customer monitoring. This cyber-insurance is the demand of the times and is not to be overlooked-by the Korean insurance companies which are suffering from accumulated loss and are facing severe economic depression. We performed a comparative analysis between the domestic cyber-insurance service and pioneers'. Also, we suggested future possibilities of cyber-insurance services, presenting an architecture for the construction of a cyber-insurance management module within the meta financial investment system.

• Korean Journal of Health Education and Promotion
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• v.15 no.1
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• pp.165-178
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• 1998

The purpose of this explanatory study was to provide baseline information on the secondary prevention health behavior of cervical cancer in Korea which was related to the utilization of the Papanicolaou (Pap) smear screening test. The secondary data from the 1992 Korean Health Behavior Survey was used for analysis in order to determine sociodemographic profiles and the predictor variables. The sample analyzed for this study contained 1,489 Korean women residing in Korea aged 20-59 selected by multi-stage sampling method from the 1990 Korean census. Univariate, bivariate, and logistic regression analysis were performed to produce the findings of this study. Only 27.9% of the study sample had had a Pap test in 1992. It was found that the relative sociodemographic profiles of the Pap test between users and non-users were distinctive. The predictors variables were age, marital status, educational status, usual source of care, perceived household economic status, health check-up, and presence of chronic diseases

• Asia-Pacific Journal of Business
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• v.1 no.1
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• pp.61-72
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• 2010

A view of cultural heritage as a form of capital considers the long term, dynamic, evolutionary, inter-temporal and inter-generational aspects of cultural heritage. The principles of sustainability provide a basis on the broader issue of culture in economic development. They might be capable of specifying a pattern of development that is "culturally sustainable" in the same way as somewhat similar set of criteria derived for the natural world, the criteria for defining ecologically and environmentally sustainable development. Thus we might accept the principles of material and non-material advancement, intergenerational and intra-generational equity, the maintenance of cultural diversity, the precautionary principle, and the recognition of system interdependence as benchmarks in assessing a cultural development process.