• Microbiology and Biotechnology Letters
• /
• v.43 no.3
• /
• pp.187-194
• /
• 2015

In this study, L. plantarum, when reacting with the culture media of potential pathogenic bacteria, exhibited an increase in growth rate and antimicrobial activity. In order to examine the characteristics and the nature of the reaction with the bacteria, this study carried out experiments involving culturing the test bacteria in M9 minimal media. Subsequently, the supernatant was incrassated by the decompression-drying method. Through colony forming unit assay, it was confirmed that L. plantarum had the function of growth inhibition to various bacteria. After culturing L. plantarum with bacterial media, the growth rate of L. plantarum was measured by absorbance (OD₆₀₀), the results showed that the growth rate (E. coli treatment group: OD₆₀₀ = 0.848, S. typhimurium treatment group: OD₆₀₀ = 0.848) increased, as compared with the non-treated control group (OD₆₀₀ = 0.48). In contrast, the concentrate itself did not induce the growth of L. plantarum. These results were observed as a universal phenomenon of the Lactobacillus species. Moreover, the increase in antimicrobial activity was observed in L. plantarum, which reacted with the culture media of E. coli and S. typhimurium, through a disc diffusion assay, and the result of growth inhibition against various bacteria was induced. Finally, based on the analysis results of the characteristics of bacteria culture media, which increased the growth rate of L. plantarum and antibacterial activity, the bacterial media had a tolerance for catabolic enzymes, pH 2−8 and heat. Therefore, this substance can be said to be a small molecule which is highly stable under various conditions.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2009.01a
• /
• pp.709-713
• /
• 2009

Recently, a lot of research that applies data acquired from devices such as cameras and RFIDs to context aware services is being performed in the field on Life-Log and the sensor network. A variety of analytical techniques has been proposed to recognize various information from the raw data because video and audio data include a larger volume of information than other sensor data. However, manually watching a huge amount of media data again has been necessary to create supervised data for the update of a class or the addition of a new class because these techniques generally use supervised learning. Therefore, the problem was that applications were able to use only recognition function based on fixed supervised data in most cases. Then, we proposed a method of acquiring supervised data from a video sharing site where users give comments on any video scene because those sites are remarkably popular and, therefore, many comments are generated. In the first step of this method, words with a high utility value are extracted by filtering the comment about the video. Second, the set of feature data in the time series is calculated by applying functions, which extract various feature data, to media data. Finally, our learning system calculates the correlation coefficient by using the above-mentioned two kinds of data, and the correlation coefficient is stored in the DB of the system. Various other applications contain a recognition function that is used to generate collective intelligence based on Web comments, by applying this correlation coefficient to new media data. In addition, flexible recognition that adjusts to a new object becomes possible by regularly acquiring and learning both media data and comments from a video sharing site while reducing work by manual operation. As a result, recognition of not only the name of the seen object but also indirect information, e.g. the impression or the action toward the object, was enabled.

• Cartoon and Animation Studies
• /
• s.31
• /
• pp.209-226
• /
• 2013

With rapidly changing multimedia environment, various artistic changes and digitalized up-to-date social infra, urban environment construction based on culture contents has been activated. The large image in front of urban building that is expressed as media-façade, increasing rapidly in a recent period, is not a new thing at all. In addition, IT technology molten in city space is testing the possibility of new media through the meeting with architecture. However, unlike its infra enlargement, the definition about media-façade is not clear so the system was constructed in a level of night lightscape or outdoor image advertisement. The purpose of this guideline is the regulation from the negative aspect rather than the possibility of various visual, artistic media expressions. Therefore, it could not show essential concept of media-façade. Moreover, most of companies or building owners focus on short-term profit and marketing effect rather than prepare various contents so they can not use constructed infra properly. After all, in many cases, they discolor the meaning of media-façade. This paper is a pilot study to grasp the current definition of media-façade to construct right guideline of media-façade. On the basis of this study, it will prepare academic definition of media-façade and construct the guideline for design evaluation.

• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.18 no.5
• /
• pp.245-250
• /
• 2018

The diffusion of smart media based on Internet has brought great changes on existing media business model. This changes also affect the core competence of jobs in media industry. This study performed two focus group interviews among professionals in media industry. The interviews examined the changes that media professionals recognize in the field and requirement changes to meet the job core competence. The interviews also examined the media education method in university that can respond to the changes in the media industry. Breaking away from the classical theory oriented education, university should develop the curriculum that can support competence required in the media industry. Media education in university should focus on fostering problem solving ability that can work regarding various issues in new media environment.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
• /
• v.24 no.3
• /
• pp.271-280
• /
• 2012

This study examines the influence of experiencing interactive media in exhibition halls on the satisfaction and perception for the exhibition space. Field measurements and surveys were performed in two exhibition halls where various interactive media were exhibited. Results imply that experiencing interactive media was important to enhance understanding the information provided by them. In order to improve satisfaction for the exhibition halls, the layout of space need to be organized effectively in a way that visitors easily feel interest in the contents and information exhibited in the space. Also, in order to keep better perception for exhibition space, the information provided in the space should be organized clearly and open to visitors easily. The flow of visitors' traffic in the exhibition space should be perceived easily by the visitors. Multiple linear regression indicated that the space should be organized effectively with good visual composition that surrounds the exhibits in order to improve satisfaction level for the exhibition hall. In addition, various information provided by the media contributed to improve perception for the exhibition hall.

• Journal of Korean Physical Therapy Science
• /
• v.9 no.4
• /
• pp.185-192
• /
• 2002

Ultrasound has been found useful as a therapeutic modality for the reduction of muscular and tendinous spasm. It has also been utilized for pain and other pathologic conditions through the ability of soundwaves to introduce molecules of chemical substances through the skin by a process. Choice of the transmission medium is very important for effective ultrasound treatment in clinical field. The purpose of this study was to analyze the effects of various ultrasound conduction media in regard to ultrasound conductivity and degree of absorption, evaporation and of skin irritation. The media used in this study were Antiphlamine, Sacch lotion, Stereogel, Trastgel, Antiphlamine S lotion, and Mentholatum lotion that have been used in clinical medicine. The study revealed that Antiphlamine was not compatible with a good ultrasound transmitter. Other media excluding Antiphlamine were compatible with a good ultrasound conductor, but they had some drawback with their nature of higher absorption, evaporation and skin irritation. The medium that was prepared by mixing of Antiphlamine with Gel in 1 to 10 ratio was a good ultrasound transmitter and extents of absorption and evaporation and of skin irritation of it were less than the other media.

• The Journal of Industrial Distribution & Business
• /
• v.13 no.9
• /
• pp.37-50
• /
• 2022

Purpose: The purpose of this study is to explore and compare research trends in Korea and overseas academic papers on social media marketing, and to present new academic perspectives for the future direction in Korea. Research design, data and methodology: We used English abstract of research paper (Korea's: 1,349, overseas': 5,036) for word frequency analysis, topic modeling, and trend analysis for each topic. Results: The results of word frequency and co-occurrence frequency analysis showed that Korea researches focused on the experiential values of users, and overseas researches focused on platforms and content. Next, 13 topics and 12 topics for Korea and overseas researches were derived from topic modeling. And, trend analysis showed that Korean studies were different from overseas in applying marketing methods to specific industries and they were interested in the short-term performance of social media marketing. Conclusions: We found that the long-term strategies of social media marketing and academic interest in the overall industry will necessary in the future researches. Also, data mining techniques will necessary to generate more general results by quantifying various phenomena in reality. Finally, we expected that continuous and various academic approaches for volatile social media is effective to derive practical implications.

• Asia pacific journal of information systems
• /
• v.29 no.3
• /
• pp.382-406
• /
• 2019

We study the antecedents to tie formation on an (Facebook-like) enterprise social media platform implemented to support cross-boundary connections. Research has produced mixed findings regarding the role of social media in cultivating bridging vs. closed networks. We examine the tie formation patterns of 1,386 enterprise social media users over a two-year period. Specifically, we observe who became (or chose not s become) "friends" with whom at the dyadic level and relate the decisions to various mechanisms that affect one's network to expand, constrain, or bridge. Using logistic and OLS regressions, we find that users tend to form ties via reciprocity and transitivity (with friends of friends), both of which help expand one's network. We also find strong networking tendency toward functional and hierarchical homophily (same business unit and same rank, respectively), which is likely to constrain one's network (closed network structure). We find that one's participation in various online interest groups is likely to open one's network (bridging network structure) while no evidence found for preferential attachment. Overall, we find that enterprise social media offers features, some of which are likely to foster bridging while others foster closed networks via different mechanisms.

• International Journal of Contents
• /
• v.9 no.4
• /
• pp.60-66
• /
• 2013

Purpose: This study was intended to develop and evaluate the cancer prevention education for general population with different educational media such as booklets, cartoons, web frame comic strips, web flash animation and flash animations on personal digital assistants (PDA). Methods: A total of 125 subjects were divided into 5 groups, each group having 25 members and assigned a different educational media. An educational media was assigned to each group to evaluate the effect of education in the first intervention. In the second intervention, 4 other media, excluding the previously used one, were used to educate the subjects and find out the preferences of educational media. Results: Knowledge about cancer increased significantly after cancer prevention education. They preferred animations on the internet to other media, the highest. Conclusion: Educational programs with various media should be developed for subjects to choose based on their preferences.

• Journal of Korean Home Economics Education Association
• /
• v.11 no.2
• /
• pp.77-87
• /
• 1999

The purpose of this study were to identify the use and related variables of instructional media by middle and high school Home Economics teachers, and to provide the foundations for the use and developments of instructional media by some teachers in Home Economics educational fields. Self administered questionnaires were distributed to middle and high school Home Economics teachers and collected by stamps from Sep. 10 to Sep. 30, 1999, and 138 questionnaires were analysed frequencies, percentages, means, and $\chi$(sup)2-test. The results were as follows：1. Schools in city areas, public schools, and boy’s schools allocated more budget to instructional media for creative Home Economics education. Teachers got instructional media information from colleagues, catalogues from media company, and advertisement or columns of journals or newspapers. 2. More younger teachers with shorter educational experiences and active members in related academic associations owned more instructional media and had the ability to develop various instructional media. 3. Most teachers showed dissatisfaction to the prices, purchasing processes, information, quality, and assortments of instructional media.