• Journal of Korea Technology Innovation Society
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• v.7 no.1
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• pp.89-110
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• 2004

Home networks consist of two or more home appliances or communication devices enabling the mutual data communication between appliances such as personal computers, refrigerators, phones, television sets, personal digital assistants(PDA), etc. There are three factors that create demand for the home network services. The first factor is development of technology. Second, on the demand side, consumer demand for the home appliances having access to the Internet is in the increase. Finally, producers need a strategy to deal with the problem of market saturation. Home networks are emerging markets. They are unique in that they unite information technologies with home appliances that provide new services. in this paper we study the main attributes of home network services and analyze consumers' preferences for them. However, it is not quite possible to use the revealed preference approach since the home network market is still at an incipient stage. We therefore use the conjoint analysis method using stated preference data. conjoint analysis has been widely use in the area of marketing for evaluating consumer preferences for new products and services. it presents a hypothetical product to the respondents along with the product's attributes and their levels. The respondents are asked to either rank each alternative or choose between several hypothetical products. By estimating consumers' willingness to pay for the attributes of the home network services and analyzing consumers' preferences, we predict the pattern of the development of the home network services and related technologies along various quality dimensions. Based on the estimation results, we draw policy implications for the national- and company-level strategy.

• Journal of Navigation and Port Research
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• v.34 no.1
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• pp.83-89
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• 2010

By analyzing the data collected through surveys conducted on coast guard officers, this paper measures the level of organizational health and explores indicators of organizational health that influence organizational effectiveness. The findings of the analysis can be summarized as follows: First, the scores of all the organizational health indicators except job stress exceed average, which leads a conclusion that coast guard organizations' organizational health is in considerably good condition. Second, the indicators of organizational health included in the analyses are found to have both positive and negative effects on organizational effectiveness. While such variables as pay, co-worker relationship, job autonomy, job itself, organizational trust, job orientation influence positively, other variables including development-oriented culture, promotion system and supervision influence negatively on organizational effectiveness.

• Journal of Korean Society of Water and Wastewater
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• v.20 no.6
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• pp.799-811
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• 2006

As an alternative measure to replace reactive stance with proactive one, a risk based management scheme has been commonly applied to enhance public satisfaction on water service by providing a higher creditable solution to handle a rehabilitation problem of pipe having high potential risk of leaks. This study intended to examine the feasibility of a simulation model to predict a recurrence probability of pipe leaks. As a branch of the data mining technique, probabilistic neural network (PNN) algorithm was applied to infer the extent of leaking recurrence probability of water network. PNN model could classify the leaking level of each unit segment of the pipe network. Pipe material, diameter, C value, road width, pressure, installation age as input variable and 5 classes by pipe leaking probability as output variable were built in PNN model. The study results indicated that it is important to pay higher attention to the pipe segment with the leak record. By increase the hydraulic pipe pressure to meet the required water demand from each node, simulation results indicated that about 6.9% of total number of pipe would additionally be classified into higher class of recurrence risk than present as the reference year. Consequently, it was convinced that the application of PNN model incorporated with a data base management system of pipe network to manage municipal water distribution network could make a promise to enhance the management efficiency by providing the essential knowledge for decision making rehabilitation of network.

• Land and Housing Review
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• v.2 no.4
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• pp.491-501
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• 2011

This study estimated economic value and benefits of Yongsan National Park, which will be constructed by financial investment of the government and objectively estimated the real value of it by understanding the value of the park from a user's view of the park. For this, the value of Yongsan National Park is divided into using value such as carbon reduction and the function of relieving urban heat island as an environmental material and non-using value based on willingness to pay of the public according to the construction of the park. As a result of the analysis, it was found out that the using value of Yongsan National Park would reach 130 million won up to maximum level of 450 million won per year, and the non-using value was analyzed to be worthy of 2,344 won per capita every month. Besides, economic ripple effect that can be expected in the process of the park construction project was analyzed to be a national policy that creates effect on production inducement of 2.6 trillion won and value added of 809.6 billion won and new jobs for 25,620 persons. Considering the value of Yongsan National Park and the effect of the project based on the result of this study, it was found that it could sufficiently secure the validity of implementing the project compared to the financial investment by the government. Therefore, it must be emphasized that diffusion strategy is necessary for national understanding and for a nation to make it understood its appropriateness widely in respect to the construction of Yongsan National Park for the successful construction of Yongsan National Park and to raise its using value in the future.

• Journal of Korean Society of Transportation
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• v.27 no.5
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• pp.29-37
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• 2009

As the level of the ambient air quality becomes increasingly important, transportation management strategies tend to incorporate air quality standards into their measure of effectiveness. However, previous research efforts did not pay much attention to the empirical relationships between traffic volume and air quality, potentially due to the lack of data. With this background, this study investigates the relationship using Seoul's existing traffic and air quality monitoring data collected over the period of three years, from 2005 through 2007. In particular, those paired monitoring sites with a distance of less than one kilometer apart were utilized, targeting the emissions of CO, NO, $NO_2$, and $PM_{10}$. As a result, in general the data of two monitoring systems exhibited lower correlations, $NO_2$ showing a relatively higher correlation with traffic volumes than other emissions. In addition, it was found that the degree of correlation can be higher for the data obtained over the morning time period, 6am-9am, and the day after rainy days.

• The Journal of Internal Korean Medicine
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• v.24 no.2
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• pp.374-379
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• 2003

Herbal remedies are enjoying a growing popularity in the world. But, we still pay few attention to the potential hepatotoxicity of herbal remedies, and there are only a few reports about that. We recently experienced a case of drug induced hepatitis caused by ingestion of Dyctamnus dasycarpus, one of herbs used for dermatologic disorders. The patient, a 38 year old woman, was admitted due to jaundice after ingestion of some herbal mixture containing Dyctamnus dasycarpus to treat her atopic dermatitis for 4 months. Other possible causes of liver injury were excluded by laboratory test and imaging studies, and we could find a report on similar cases caused by ingestion of Dyctamnus dasycarpus. During conservative treatment, elevated liver enzyme and total bilirubin level slowly returned to normal value. This case stresses the need to warn the potential hepatotoxicity of Dyctamnus dasycarpus, especially for a long time ingestion. So we suggest the necessity of toxicology screen at regular intervals during long time ingestion of herbal medicine, and further evaluation of the safety and toxicity of Dyctamnus dasycarpus.

• Journal of Preventive Medicine and Public Health
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• v.34 no.4
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• pp.417-426
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• 2001

Objectives : To analyse the psychosocial factors associated with hypertension management(drug treatment and life style modification) of newly detected cases and to understand and assess their behavioral intention or behaviors. Methods : The survey area was a combined urban and rural area in Chungnam province, Korea, and the sampling method was cluster sampling. Study subjects included 541 newly detected cases of hypertension rated above stage 2 by JNC-VI from a community survey. The first survey was applied to 383 of these patients in order to discern their psychosocial characteristics. A follow-up survey was given to 345 persons with an 11-month interval following monthly telephone counseling concerning medication and life style modification by trained nurses. The final study subjects for analysis comprised 271 persons after excluding cases of incomplete data and change of address. Results : Among the 85(33.2%) new patients who had intended to undergo drug treatment, 30(35.3%) persons were treated with antihypertensive agent after 11 - month interval, while among the patients with no intention to receive treatment, only 36(21.1%) persons were treated. Hypertensive patients with a high intention score revealed a high score in life style modification compliance as well. Seventy three percent of the variance of behavioral intention to undergo hypertension management was explained by the patients attitude toward performing the behavior and subjective norm associated with behaviors related to the theory of reasoned action in structural modeling. Actual behaviors related positively with behavioral intention. The coefficient of determination was 0.255. Conclusion : Improving the compliance level of hypertensive patients in respect to drug treatment or life style modification requires a build up of positive behavioral intention, and caregivers must pay more attention to eventually converting behavioral intention to actual behaviors.

• Journal of Marine Bioscience and Biotechnology
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• v.3 no.1
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• pp.54-60
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• 2008

Compared to other North African countries, Tunisia has reached a significant level of fish consumption. The only relevant historical dimension of aquaculture in Tunisia are traditional lagoon management (80,000 ha of lagoon and coastal lakes) and culture of shellfish. Semi-intensive and intensive cultures are relatively new concepts in Tunisia and only recently also the public sector is involved. The Tunisian fishing industry has expanded over the last 20 years and annual catches at present are more than four times those registered in mid-fifties. Production of the year 2007 reached 105 thousand tons against 111 thousand tons during the same period of 2006 thus recording a fall of 5%. Unfavorable weather conditions mainly during the last quarter year had the effect to reduce the number of days out at sea. Exports reached 24.3 thousand tons for one value 240.5 MD against respectively 22.2 thousand tons and 234.1 thus recording MD at the end of the past year a rise of 9% in volume and from 3% in value. Commercial value such as shellfish - consequence of one regression of the production - with in parallel raises blue fish exports. The imports were stabilized in volume of 39.1 thousand tons and increased from 6% in value with respectively 67.4 MD in 2007 against 63.7 MD at the end of 2006. The importation in larger quantities of intended fish to the fattening of tuna in floating cages explains partly this rise. Nevertheless, the pay of balance import/export of produced fishing remains positive with a surplus of 173.1 MD against 170.4 MD in 2006.

• The Journal of the Korea Contents Association
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• v.17 no.5
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• pp.461-469
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• 2017

The purpose of this study was to investigate college life adaptation and loneliness of non-traditional adult learners with nursing major. A cross-sectional survey was conducted on one hundred and ten participants from selected universities in G city. A structured questionnaire which included general characteristics, a College Life Adaptation Scale and a Revised UCLA Loneliness Scale was a study instrument. Descriptive statistics, independent t-test, one-way ANOVA, and Pearson correlation coefficients were used for data analysis. The average level of college life adaptation was 44.8, while the score for loneliness was found to be 40.3. There was a significant difference in college life adaptation according to perceived health status. Loneliness showed a significant difference according to grades. A significant positive correlation was observed between college life adaptation and loneliness. In other words, the greater the loneliness, the lower the adaptation to college life. Thus, the results suggest that Korean universities should pay close attention to psychological factors such as loneliness to improve the adaptation of non-traditional adult learners with varied backgrounds to college.

• Korean Journal of Social Welfare Studies
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• v.47 no.4
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• pp.217-254
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• 2016

The purpose of this study is comparing fiscal sustainability of 17 welfare states. Borrowed the concept of fiscal space to Ostry et al(2010) and Ghosh et al(2011), this study measures the fiscal sustainability in welfare states. Using data collected from 20 OECD countries from 1986 to 2013, this study attempts to evaluate the financial sustainability of each country. As a result, it is necessary that the appropriate level of tax burden is secured. Tax revenue is the funded basis for maintaining the welfare state, so increasing tax compliance to offset the negative impact of increasing welfare spending will promote social cohesion. In therms of tax structure, in accordance with the ability to pay principle, it is important to raise the equity between the source of taxation. Reducing the gap between labor and capital tax is required to achieve horizontal equity, It is also useful to utilize the financial base of the welfare state by broadening the tax base though a consumption tax. Improving the vertical equity can also make a positive contribution to the fiscal sustainability of the welfare state.