• Journal of Korea Society of Industrial Information Systems
• /
• v.8 no.3
• /
• pp.76-84
• /
• 2003

Software agents reduce human involvement to a certain extent by automating routine tasks. However, most of agents have assisted with only a few steps in the multi-steps process of electronic transactions. In order to help users with the important steps in the electronic transactions, software agents need to persuade other parties to act in particular ways. While negotiations have many shapes and forms, this paper focuses on a particular class of negotiation, that is competitive business environment based negotiation. For negotiation with other parties in this contort, it is necessary for autonomous agents to consider environmental variables-the number of competitors, the number of negotiation parties, the maximum time by which they must finish their jobs, and user's preferences. Previous negotiation decision functions for the automated negotiation have used only time or the static numbs of negotiating parties as negotiation criteria, although competitive business environment should include potential competitors who can snatch negotiation parties away. This paper attempts to evaluate the performance of a negotiation decision function that considers the potential competitors in competitive market environment as well as that of a negotiation decision function that does not. For this evaluation, this study adopts the electronic marketplace as an application domain because many buyers and sellers compete for limited resources in the marketplace.

• Ecology and Resilient Infrastructure
• /
• v.10 no.1
• /
• pp.11-19
• /
• 2023

Alien species are known to threaten regional biodiversity globally, which has increased global interest regarding introduction of alien species. The Ministry of Environment of Korea designated species that have not yet been introduced into the country with potential threat as alert alien species to prevent damage to the ecosystem. In this study, potential habitats of Esox lucius and Maccullochella peelii, which are predatory and designated as alert alien fish, were predicted on a national basis. Habitat suitability was evaluated using EHSM (Ecological Habitat Suitability Model), and water temperature data were input to calculate Physiological Habitat Suitability (PHS). The prediction results have shown that PHS of the two fishes were mainly controlled by heat or cold stress, which resulted in biased habitat distribution. E. lucius was predicted to prefer the basins at high latitudes (Han and Geum River), while M. peelii preferred metropolitan areas. Through these differences, it was expected that the invasion pattern of each alien fish can be different due to thermal preference. Further studies are required to enhance the model's predictive power, and future predictions under climate change scenarios are required to aid establishing sustainable management plans.

• Science of Emotion and Sensibility
• /
• v.11 no.2
• /
• pp.173-180
• /
• 2008

In this research, experiments were performed to focus on haptical factors among the emotional way of expression in design, and, find out what factors of preference influenced by haptic elements as surface material, grip senses and shape that considering clues when consumer has purchase intention. The questionnaire survey of beverage bottles in experiment extract to haptic elements were estimated in various surface of bottles and consumer preference through practical touch by managed objects themselves. The experimental groups for this survey, one is using sight and sense of touch both, the other groups are use sense of touch only without sense of sight. Therefore, to find out effective factors for design and functional matter as the kind of treating surface and properties derived from comparing two experimental groups have recognition in level of priority for each element related with haptical design sources. Finally, considering practical use schema with emotional approach based on haptical property to adopting design process.

• Convergence Security Journal
• /
• v.15 no.1
• /
• pp.11-18
• /
• 2015

Our country is a nation accomplished the economic growth and democracy at the same time on the bases of human capitals. However, the laborers as human capitals are aging as well due to the population aging. These aging phenomena are impacting on our country's economy, society, and through the culture. It seems to increase the proportion of the elderly in the labor market of private security caused by continuously increasing the number of elderly employees in long-term trend and their preferences for the security services. These changes of labor market trend may result various problems including relevant laws and systems, the changes of laborers' ability, increase of crimes and so on. To prevent such potential problems, firstly the limits of maximum working hours of elderly private guards have to be set up, and the rest times for them must be secured. Furthermore, the declines of elderly laborers' abilities have to be reduced through the systematic educations relevant to their jobs to cover the rapidly declining elderly laborers' physical abilities. Lastly, the increase of crimes should be reduced through the education contents to be able to arouse their attentions by extending the time of job training and informing of criminal cases.

• The Journal of Bigdata
• /
• v.3 no.1
• /
• pp.21-32
• /
• 2018

Currently, Webtoon Industry is promising as high potential market from it's high growth trend. The best advantage webtoon propose is that webtoon can provide appropriate service to customers with various needs. For this feature, webtoon industry is expanding throughout the world. This situation may give a great chance for authors and webtoon service corporation to export webtoon contents. Also, this situation could be an opportunity for webtoon to become a new "Korean Wave" contents. For successful advance to market, a close analysis for customers of exporting countries. In this research, we collected the data from Naver Webtoon and analyzed the features of webtoons and webtoon subscribers according to countries. With this research, it would be possible to find out specific methods and variables which affect the preference of webtoon subscribers.

• The Journal of the Korea Contents Association
• /
• v.19 no.6
• /
• pp.663-675
• /
• 2019

During the last decade, the dominant design of display has been LCD, and it has been led by Korean manufacturers. However, their leading positions has been recently threatened by Chinese manufacturers, Korean manufacturers are endeavoring to move toward next generation display technologies. They embarked on standards battle to win dominant design especially in the next generation display market for TVs by launching new technologies such as Quantum-dot display and OLED. While there are a number of factors of dominant design, it is expected that the technical attributes of the technology itself may be the most significant factor. For this reason, this research scrutinizes consumer preferences for technical attributes, and attempts to provide implications for standards battle in the display (for the TVs) sector. For this purpose, we employed a conjoint analysis for the preferences of potential consumers. The results show that potential consumers prefer displays with higher resolution, natural color, and durabillity.

• Journal of Korean Society of Forest Science
• /
• v.100 no.4
• /
• pp.722-732
• /
• 2011

Firms initiate philanthropic activities to improve social welfare that is beyond the scope of their responsibility towards society. Forestry activities, among other philanthropic areas, simultaneously improve corporate environment and social performance and provide the opportunity to cooperate for a large number of employees. Firms can effectively contribute to forest conservation with their financial and human resources. To encourage participation of more firms, we need to understand how and why firms engage in such activities. This study aims to explore different types of philanthropic forestry activities that these firms undertake. Corporate philanthropic activities can be categorized as donation, in-house project, or collaboration according to the governance type. We analyzed Yuhan-Kimberly's forestry campaign to investigate how and why the firm engaged in each type. We also propose some practical implications for firms, government, and non-profit organizations to invigorate firm's participation in philanthropic forestry activities.

• Smart Media Journal
• /
• v.12 no.4
• /
• pp.27-40
• /
• 2023

Many researchers have investigated ways to enhance recommender systems by integrating heterogeneous data to address the data sparsity problem. However, only a few studies have successfully integrated heterogeneous data using knowledge graph. Additionally, most of the knowledge graphs built in these studies only incorporate explicit relationships between entities and lack additional information. Therefore, we propose a method for expanding knowledge graphs by using deep learning to model latent relationships between heterogeneous data from multiple knowledge bases. Our extended knowledge graph enhances the quality of entity features and ultimately increases the accuracy of predicted user preferences. Experiments using real music data demonstrate that the expanded knowledge graph leads to an increase in recommendation accuracy when compared to the original knowledge graph.

• The Journal of the Korea Contents Association
• /
• v.22 no.8
• /
• pp.358-366
• /
• 2022

Recently, 'Apartment community facilities' have emerged as the most optional factor in the apartment market, and their level is becoming very important. Therefore, this study derived each type through latent profile analysis centering on health-related community facilities in 126 domestic main apartment complexes, and as a result of the analysis, it was confirmed that it was divided into a Pilates group, GX and Yoga group, Golf and Table Tennis practice range group, and overall low group. Among the four groups, Pilates, GX, and yoga groups are more likely to belong to Gangnam, Seocho and Songpa compared to complexes with many golf and table tennis practice ranges, and at the same time, the transaction price is also the highest. Through these analysis results, it was suggested that changes in the preference for leisure activities should be reflected when constructing community facilities, and that health-related community facilities should be deeply considered in residential welfare policies in consideration of high preference for fitness facilities in youth housing.

• Journal of Digital Convergence
• /
• v.10 no.2
• /
• pp.255-267
• /
• 2012

High Internet usage and the public's keen interest on health have influenced the health care system, and a potential value of the online health information and medical consultation market is immense. This study reveals results from data collected from Seoul residents in the age group of 20s in 2011. Out of 499 respondents, 75.2% answered that they used online health information; however, only 7.2% answered that they have used online medical consultation services. Findings on the purposes of using online medical consultation included treatments of symptoms(33.6%) and self-disciplines of one's health(19.5%). Mostly used Websites for health information search included search engines and blogs, but respondents preferred to use government sites and hospital sites in the future. When choosing a medical consultation, respondents preferred a certain website for different reasons including creditability of the consultant(23.7%), creditability of the organization(23.7%), rapid responses(21.2%), and more. Overall, although health information search via web is being highly utilized among people in their 20s, utilization of online medical consulting is not. Thus, promotion efforts to increase awareness and utilization of online medical consulting based on the site selection criteria, type of personal information disclosure, and other preferences are essential. Also, creating websites meeting these criteria is important.