• Title/Summary/Keyword: Science and Media

Search Result 6,800, Processing Time 0.044 seconds

Images of Nurses Appeared in Media Reports Before and After Outbreak of COVID-19: Text Network Analysis and Topic Modeling (COVID-19 발생 전·후 언론보도에 나타난 간호사 이미지에 대한 텍스트 네트워크 분석 및 토픽 모델링)

  • Park, Min Young;Jeong, Seok Hee;Kim, Hee Sun;Lee, Eun Jee
    • Journal of Korean Academy of Nursing
    • /
    • v.52 no.3
    • /
    • pp.291-307
    • /
    • 2022
  • Purpose: The aims of study were to identify the main keywords, the network structure, and the main topics of press articles related to nurses that have appeared in media reports. Methods: Data were media articles related to the topic "nurse" reported in 16 central media within a one-year period spanning July 1, 2019 to June 30, 2020. Data were collected from the Big Kinds database. A total of 7,800 articles were searched, and 1,038 were used for the final analysis. Text network analysis and topic modeling were performed using NetMiner 4.4. Results: The number of media reports related to nurses increased by 3.86 times after the novel coronavirus (COVID-19) outbreak compared to prior. Pre- and post-COVID-19 network characteristics were density 0.002, 0.001; average degree 4.63, 4.92; and average distance 4.25, 4.01, respectively. Four topics were derived before and after the COVID-19 outbreak, respectively. Pre-COVID-19 example topics are "a nurse who committed suicide because she could not withstand the Taewoom at work" and "a nurse as a perpetrator of a newborn abuse case," while post-COVID-19 examples are "a nurse as a victim of COVID-19," "a nurse working with the support of the people," and "a nurse as a top contributor and a warrior to protect from COVID-19." Conclusion: Topic modeling shows that topics become more positive after the COVID-19 outbreak. Individual nurses and nursing organizations should continuously monitor and conduct further research on nurses' image.

Study on the Development of Horticultural Media using Recyled Used-mushroom-media (버섯폐배지를 재활용한 원예용 상토 개발에 관한 연구)

  • Kim, Chang-Ho;Oh, Tae-Seok;Shin, Dong-Gook;Cho, Yong-Koo;Kim, Yeong-Wun;Ann, Seoung-Won
    • Journal of Environmental Science International
    • /
    • v.23 no.2
    • /
    • pp.303-312
    • /
    • 2014
  • As for chemical characteristics of cultivated media waste, the total content of nitrogen, phosphoric acid, and potassium was 6.93%; organic matter content was 67.78%; pH and EC were 7.20 and 1.46 ds/m, respectively. Organic acids identified during stabilization included citric acid, oxalic acid, fumaric acid, and acetic acid, which was highest. During the stabilization of cultivated media waste, temperature decreased and pH increased on the 15th day, and the germination index was 88 after the period, indicating that at least 15 days of stabilization is needed when cultivated media waste is used for growth material of crop. As for germination characteristics, when the mixture rate of cultivated media waste was 20% and under, germination of cucumber and oriental melon was favorable without difference compared to the control plots. For lettuce and Chinese cabbage, no statistically significant difference was found when the rate was 10% and under compared to the control plots. As for seedling quality after 20 days of sowing, cucumber, oriental melon, and Chinese cabbage showed favorable growth only when the mixture rate of cultivated media waste was 10% and under; lettuce showed lower growth characteristics regardless of mixture rate when compared to the control plots. Cultivated media waste may be significantly useful for cucumber and oriental melon, but not for Chinese cabbage and lettuce.

Development of Solid Culture Media for the Mass Production of Beauveria bassiana Conidia (흰굳음병균(Beauveria bassiana) 포자의 대량배양을 위한 고체배지의 개발)

  • 서종복;진병래
    • Journal of Sericultural and Entomological Science
    • /
    • v.38 no.1
    • /
    • pp.31-35
    • /
    • 1996
  • To develope a solid culture media for the mass culture of Beauveria bassiana conida, wheat bran was selected as C source and N source. The pellet media were prepared without(P-I) and with(P-II) solidified ingredient. The moisture for the growth of B. bassiana was required over 4 : 2 of Media : D.W (W/V). The growth of Beauveria bassiana on the media type was more effective in media of pellet type than that of powder type. In addition, production of Beauveria bassiana conidia on the media size was more effective in media of S type($\Phi$3mm) than that of L type($\phi$7mm). And the yield of Beauveria bassiana conidia at 2$0^{\circ}C$ cultivation on 3 weeks post inoculation was similar to that of $25^{\circ}C$. Above-mentioned results showed that pellet medium (P-I) was effective to growth of Beauveria, suggesting that the pellet media may be useful in the mass production of Beauveria bassiana conidia.

  • PDF

The study was to analyze the effect of various ultrasound transmission media (초음파 투과성 매질들의 여러 특성에 관한 연구)

  • Ghang, Goon-Yong;Kim, Young-Bae
    • 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.

  • PDF

An Embedded Multifunctional Media System for Mobile Devices in Terrestrial DTV Relaying

  • Huang, Jun;Yin, Haibing
    • Journal of Information Processing Systems
    • /
    • v.14 no.5
    • /
    • pp.1272-1285
    • /
    • 2018
  • The paper presents a novel embedded multifunctional media sever (EMMS) for mobile devices to receive various media programs. Being different from other contemporary system research, the paper mainly studies how to design a reception solution for terrestrial digital television (DTV) on mobile devices and how to enable mobile devices can receive DTV program, enjoy video-on-demand (VOD), achieve video surveillance and relay Internet video program via local Wi-Fi simultaneously. In the system design, we integrate broadcasting-terrestrial DTV tuner, streaming media re-transmission system, VOD disk, video camera and access interface to the Internet into EMMS, which can either receive terrestrial DTV radio signals and demodulate out digital transport stream (TS), or can read streaming media bit-stream from VOD disk, surveillance camera or access interface to the Internet. The experimental results show the proposed system is stable and quality-efficient. Comparing with the other systems, the proposed system has the least packet loss rate and response time.

PR-Management and Branding of Media Channels with the Application of Social Networks

  • Shalman, Tatiana;Dobrianska, Viktoriia;Kokhan, Marianna;Pletsan, Khrystyna;Humenchuk, Anatolii
    • International Journal of Computer Science & Network Security
    • /
    • v.21 no.7
    • /
    • pp.70-76
    • /
    • 2021
  • The relevance of intelligence involves the definition of such communication systems of PR-management and branding of media channels with the use of social networks, which are already implemented in practice by modern representatives of professional PR product. The purpose of the investigation is to determine the system of implementation of technologies of PR-management and branding of media channels with the use of social networks based on a survey of PR and brand of different media channels on the basis of a survey of brand managers and PR. 980 respondents from Ukraine took part in the survey. The survey was conducted on the Google-forms platform. The results outline a list of the most popular social networks and messengers for the implementation of PR management and branding technologies, including Facebook, Twitter, Google, LinkedIn, Tumblr; Telegram, WhatsApp, Viber, Skype. It is determined that the criteria of branding analysis are informativeness, centralization/distribution, content, feedback intensity. Identified 2 prospects for the development of branding in an interactive media environment (creation of a presentation system; integration of websites of social media and companies in universal centers). The criteria of general importance of the factors influencing the behavioral intention of consumers to use social media channels are presented (satisfaction, accessibility, perceived usefulness, trust, ease of use, attitude, social influence, self-efficacy). The meaning of the content of social media channels (public, informational and communication) is indicated. The practical significance of the study was to present the links between the criteria, development prospects and the values of branding factors.

Comparison of Dyes for Easy Detection of Extracellular Cellulases in Fungi

  • Yoon, Ji-Hwan;Park, Ji-Eun;Suh, Dong-Yeon;Hong, Seung-Beom;Ko, Seung-Ju;Kim, Seong-Hwan
    • Mycobiology
    • /
    • v.35 no.1
    • /
    • pp.21-24
    • /
    • 2007
  • To evaluate which dye is effective in a plate assay for detecting extracellular cellulase activity produced by fungi, four chromogenic dyes including remazol brilliant blue, phenol red, congo red, and tryphan blue, were compared using chromagepic media. For the comparison, 19 fungal species belonging to three phyla, ascomycota, basidiomycota, and zygomycota were inoculated onto yeast nitrogen-based media containing different carbon substrates such as cellulose (carboxylmethyl and avicel types) and cellobiose labeled with each of the four dyes. Overall, the formation of clear zone on agar media resulting from the degradation of the substrates by the enzymes secreted from the test fungi was most apparent with media containing congo red. The detection frequency of cellulase activity was also most high on congo red-supplemented media. The results of this study showed that congo red is better dye than other three dyes in, a plate assay for, fungal enzyme detection.

Technology Trend in Ionic Liquids (이온성 액체의 기술 동향)

  • Lee, Hyunjoo;Lee, Je Seung;Ahn, Byoung Sung;Kim, Hoon Sik
    • Applied Chemistry for Engineering
    • /
    • v.16 no.5
    • /
    • pp.595-602
    • /
    • 2005
  • Ionic liquids (ILs) are the ionic salts pertaining to liquid-state at lower temperature than $100^{\circ}C$. ILs have attracted attention as new media because of their peculiar chemical, physical or electrical properties such as low volatility, nonflammability, liquid-phase stability at high temperature, high ability in solvating organic, inorganic or polymeric materials, and high ionic conductivity. Since the properties can be modified by assembling the pair using various anions and cations, ILs are often called designer solvents. In addition, ILs have been expected as new green media to replace the volatile organic solvents, which have been widely used in chemical, energy, material, and electronic industries, as well as to enhance the reaction activity and selectivity. In this review paper, the structures, properties, applications, and technology trend of ILS are introduced.

Development of Liquid Culture Media for the Mass Production of Beauveria bassiana Blastospore (흰굳음병균(Beauveria basiana) 단균사의 대량배양생산을 위한 액체배지 개발)

  • 서종복;진병래
    • Journal of Sericultural and Entomological Science
    • /
    • v.37 no.2
    • /
    • pp.172-175
    • /
    • 1995
  • To develope a liquid culture media for the mass culture of Beauveria bassiana blastospore, wheat bran and soybean cake were selected as a carbon and nitrogen source, respectively. The composition and final concentration of wheat bran and soybean cake in liquid culture media were determined by the growth of B. bassiana blastospore. The results showed that the growth of B. bassiana blastospore was effective in the rate of 3 wheat bran: 2 soybean cake and in 5% of final concentration of the liquid culture media, suggesting that the liquid culture media using wheat bran and soybean cake are available.

  • PDF