• Journal of the Korean Operations Research and Management Science Society
• /
• v.41 no.3
• /
• pp.59-74
• /
• 2016

Electricity sales are directly measured from individual consumers, which could minimize the time gap between data collection and public announcement. Furthermore, industrial electricity sales are highly linked with production and output. Therefore, industrial electricity consumption can be used to track production and output in real time. By using the high-frequency data of industrial electricity sales, this study develops the daily electricity business index (DEBI) to capture the daily economic status. The steps used to formulate DEBI are as follows: (1)selection of the explanatory variables and period, (2) amendment of the seasonal adjustment to eliminate daily temperature and effective day effects, (3) estimation of the weighted value via variables by using PCA, (4) calculation of DEBI and commencement of validation tests. Our empirical analysis and the Hodrick-Prescott filter analysis show that DEBI is highly related to existing economic indices.

• Management & Information Systems Review
• /
• v.26
• /
• pp.61-90
• /
• 2008

The purpose of this paper is to investigate the effects of anti-smoking advertising on attitude toward anti-smoking and behavioral intention to quit smoking in terms of audience's involvement with anti-smoking and knowledge on smoking. For this, a total of 10 hypothesis were established and statistically tested. According to the results, all but hypothesis 1-1(attitude toward anti-smoking is more favorable in the high involvement condition than in the low involvement condition) were unfortunately rejected. These results can be justified by theoretical explanations such as Hierarchy Effects Model or Elaboration Likelihood Model. In addition, some methodological reasons were provided as well.

• Journal of Preventive Medicine and Public Health
• /
• v.52 no.5
• /
• pp.277-280
• /
• 2019

The Ministry of Food and Drug Safety of Korea made an official announcement in March 2018 that the total number of inoculations of Hantaan virus vaccine ($Hantavax^{(R)}$) would change from 3 to 4. Some aspects of this decision remain controversial. Based on the characteristics of Hantaan virus (HTNV) and its role in the pathogenesis of hemorrhagic fever with renal syndrome, it might be difficult to develop an effective and safe HTNV vaccine through the isolate-inactivate-inject paradigm. With the development of high-through-put 'omics' technologies in the 21st century, vaccinomics has been introduced. While the goal of vaccinomics is to develop equations to describe and predict the immune response, it could also serve as a tool for developing new vaccine candidates and individualized approaches to vaccinology. Thus, the possibility of applying the innovative field of vaccinomics to develop a more effective and safer HTNV vaccine should be considered.

• Journal of Broadcast Engineering
• /
• v.23 no.4
• /
• pp.536-548
• /
• 2018

Public data has been transformed from provider-oriented information disclosure to a form of personalized information sharing centered on individual citizens since government 3.0. As a result, the government is implementing policies and projects to maximize the value of public data and increase reuse. This study analyzes the issues related to public data in the news and seeks the status of government agencies and government projects by issue. We conducted semantic analysis on domestic online news and public agency bidding information including public data and conducted the work of linking major key words derived with social and economic values inherent in public data. As a result, major issues related to public data were divided into broader access to public data, growth of new technology, cooperation and conflict among stakeholders, and utilization of the private sector, which were closely related to transparency, efficiency, participation, and innovation mechanisms. Also major agencies of four issues include the Ministry of Strategy and Finance and Seoul, Ministry of Culture, Sports and Tourism and Gyeonggi-do, Ministry of Trade, Industry and Energy and Incheon, and Ministry of Land, Infrastructure and Transport and Gyeongsangbuk-do. Most of the issues are being led by the government.

• Journal of Digital Convergence
• /
• v.16 no.5
• /
• pp.199-206
• /
• 2018

The current study investigated mediating effects of self-regulatory system in the context of public service announcements (PSAs). We conducted a survey to collect participants' orientation of self-regulatory systems, emotional response and evaluation of PSAs. A total of 70 undergraduate students with mean age of 22.49 (SD = 3.22). Results showed that emotional engagement to the PSAs is affected by ad liking and, in turn, directly influences intention to act as a campaign outcome. Furthermore, our findings suggested that promotion-oriented individuals are more likely to commit PSA messages than do the prevention-oriented individuals. Therefore, messages of the PSA campaign should include hope and aspiration, indicating the connection of accomplishment and advancement.

• Journal of Korean Library and Information Science Society
• /
• v.46 no.1
• /
• pp.115-133
• /
• 2015

This study investigates the contents of twitters serviced by metropolitans and citizens' questions to propose improvements. Using content analysis as a research method, this study recorded and analyzed all the tweets of six metropolitans (Seoul, Busan, Daegu, Incheon, Daejeon, Gwangju) for three months. As the results, the frequency analysis of tweets revealed that Busan posted more tweets than other cities, and Seoul posted the highest number of tweet using URL link. The results of content analysis showed that the most frequently provided information from tweeters was about convenience of citizens living. Tweets using URL link were focused on information about citizen living, prize contest, and service announcement. Citizens had a request for information about their life and traffic. For public information service using tweeter in the future, this study provided several important suggestions.

• The Korean Journal of Financial Studies
• /
• v.2 no.2
• /
• pp.315-344
• /
• 1995

The relationship of information flow and market price formation are central to the basic tenets of financial economics. Whereas information is usually treated as being either public or private(monopolistic), most empirical studies focus on the price effects of public announcements. More recent research has centered more on the role of private information, such as insider trading, in efficient pricing and whether such trading increases investor welfare. Typically, 'insider trading' refers to an officer that trades in his/her company's shares. Insider trading, however, also refers to anyone who generates private, albeit costly, information concerning a stock's fundamental value. Normally, such insider activity is more difficult to ascertain. One way in which negative information is revealed is through short-selling activity, especially the monthly short-interest positions reported by the national stock exchanges. Diamond and Verrecchia(1987) provide a theoretical paradigm that predicts a negative price adjustment upon announcement of n company's monthly short interest, if the short interest displays an unusual increase and is correlated with negative information that is not yet public. Empirical studies of the short-run, negative price effect predicted by Diamond and Verrecchia find mixed results. One explanation is that the time period studied is too short for the market to absorb the informational content of these announcements. One reason is that these announcements are an ambiguous signal that requires more individuals and time to collect and act on the same information before full revelation occurs or before the implicit information becomes publicly known. This 'long delayed reaction' also serves as a motivation for related research on the wealth effect of mergers, share repurchases, and initial equity offerings in which long-run performance differs from the initial, short-run reaction to such announcements or offerings.

• Proceedings of the Korean Institute Of Construction Engineering and Management
• /
• 2007.11a
• /
• pp.483-486
• /
• 2007

In 1997, after Construction Management was introduced, it has been ten years; moreover, there has been many thesis until recently. However, in the past thesis, studies of Construction Management were limited to the public and standards for an activation were not certain. So, in this study, using Public Announcement of CM Ability Valuation, we analyzed the market of the domestic CM in the aspect of the number of contracts and the sum of money. The number of domestic construction contracts has decreased since 2002. In contrast with the number, the sum of money has increased. And the market of CM has been extended. However, the occupancy rate of the contract money was low in contrast with the number of contracts. But comparing with the growth rate of economy and Construction market, that of the CM market has been extending. Through this study, we decided that the market of CM was being activated.

• Atmosphere
• /
• v.29 no.2
• /
• pp.213-218
• /
• 2019

A valuation of air pollution is critical for relevant policy-making for the public and research direction. This study conducted a willingness-to-pay (WTP) survey using contingent valuation method (CVM) in Seoul Korea. In detail, this study puts an emphasis on its temporal changes referred on two surveys conducted in 2014 and 2019. In reference to the previous studies in 2002, our survey indicated that the public awareness of air pollution and interests on its sources and solutions increased noticeably. Our survey showed that WTP increased significantly from 2588 to 4827 and 8240 Korean Won $month^{-1}$ in 2002, 2014, and 2019, respectively. Moreover, the percentage of respondents to pay the WTP also increased from 48% to 68% and 79% in 2002, 2014, and 2019, respectively. Our analysis based on the number of Google search on particulate matters (PMs) strongly suggests that such the noticeable increases of the public attention to air pollution is well accorded with the moment of the announcement of a standard for ultra-fine particles and the start of PM prediction in late 2013. But the Google search rate grew about 16.7 times in 2009 compared to 2014, which is much larger than the growth rate of interest and WTP between 2014 and 2019. Our results shed light on policy decision for the right person in the right place on the right time in the era of air pollution.

• Journal of Convergence for Information Technology
• /
• v.10 no.11
• /
• pp.324-331
• /
• 2020

This study used the financial information of 29 Regional public hospitals registered in the HASPA. Regional public hospitals analyzed the ratio of operating financing by management activities and how they affect net profit. The results of the study, Regional Public Hospitals ratio of fund financing for management activities was 83.50 percent for medical revenues, 9.53 percent for Incidental Revenue of Medical, 4.54 percent for Contribution Revenue, 4.42 percent for Other non-medical profits, 1.21 percent for depreciation Expense and 0.73 percent for Amount of reserve for unique purpose project. As a result of examining the effect of financing by management operation on net profit, the ratio of operating funds by medical revenue, by incidental revenue of medical, by contribution revenue and by other non-medical profits had a positive impact on net profit of Regional public hospitals. And It has been confirmed that the ratio of amount of reserve for unique purpose project has a negative impact on net profit. Therefore, it is necessary for Regional public hospitals to manage costs in consideration of revenues and internal reserves.