• Journal of the Korean Society for information Management
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• v.36 no.3
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• pp.81-107
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• 2019

The purpose of this study is to assert the justification for actively accepting media education in Library and Information Science and to suggest the media type according to the concept and classification criteria of the media from the perspective of Library and Information Science. In order to present the media type according to the concept of the media, the dictionary concept of the media was reviewed, the language and media for high school students in Korean language, the educational materials for elementary and secondary school students written by Media Education Committee of Korean Society for Journalism & Communication Studies, the educational textbooks for elementary and secondary school students in Library and Information Science, and media classification presented in the RDA of the cataloging rules were analyzed. In addition, the implications were derived based on the analysis results of the concepts and media type. The concept of media was set based on the analysis results and implications, and the media types were presented according to the concepts and classification criteria. In this study, the media was set up in the same meaning as the medium, and it was defined that the media function as a means of communication and that information contained in it can be obtained through the human sensory apparatus through physical objects that contain, transmit or reproduce information. The media was set up as three logical components of the media in this study: information in the media, materials, and representation devices.

• Microbiology and Biotechnology Letters
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• v.51 no.1
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• pp.10-17
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• 2023

Dairy products are extensively used as carriers of probiotic strains that have potential health benefits. Assessment of the viability of probiotic strains during manufacturing is important to ensure that products meet recommended levels. Hence, the method for accurately quantifying lactic acid bacteria (LAB) in probiotic or dairy products is required. The present study aims to examine the performance of de-Man Rogosa Sharpe (MRS), plate count agar with bromocresol purple (PCA with BCP), and glucose blood liver (BL) agars recommended in the Korea Food Code guidelines for counting LAB. Analysis of the performance of culture media containing 19 lactic acid bacterial species commonly encountered in probiotic and dairy products showed no statistically significant difference between 18 reference strains and three culture media (p > 0.01). Furthermore, the suitability of three culture media was verified for the quantitative assessment of LAB in 25 probiotic and dairy products. The number of LAB in three culture media was determined to be more than 10⁷ colony-forming unit (CFU)/ml for fermented milk products and 10⁸ CFU/ml for condensed fermented milk and probiotic products, indicating that they all satisfied the Korea Food Code guidelines. Moreover, there was no statistically significant difference in the amount of LAB counted in all three culture media, suggesting that they can be used to isolate or enumerate LAB in commercial products. Finally, three culture media will be useful for isolating and enumerating LAB from fermented foods as well as gut microflora.

• Proceedings of the Korean Information Science Society Conference
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• 2006.06b
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• pp.373-375
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• 2006

본 논문에서는 한국의 전통문양을 이용하여 이미지 코드를 구성하고 문양 내부에 데이터를 저장 할 수 있도록 구조를 설계하였다. 인코딩과 디코딩 알고리즘은 일반 사용자 컴퓨터 환경에 적용 할 수 있도록 제안하였다. 기존의 이미지 기반 코드들과는 다르게 데이터 구조를 유지하면서도 디자인 적인 측면을 살려 이미지 코드에 한국의 문화적인 요소를 표현할 수 있게 되었고 문화 코드로서 역할을 수행하게 되었다. 처음 설계 단계에서부터 전통문양을 이용한 한국의 문화를 표현찬 수 있는 코드의 개발을 목표로 접근하였고 이를 유비쿼터스 시대의 문화코드로 사용함으로서 한국의 전통문화와 멋을 세계에 널리 알리고 감성을 자극하는 코드역할을 할 것으로 기대된다.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2019.11a
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• pp.155-157
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• 2019

본 논문에서는 기존의 DERS, VSRS를 이용한 가상시점 합성이 가지고 있는 문제점을 해결하기 위해 비지도 학습 방식의 학습 모델을 이용하여 가상시점 합성에 적용하는 방식을 제안한다. 제안한 방식에서는 기존의 DERS와 달리 Disparity의 탐색범위를 지정하지 않고 Depth의 예측이 가능하며 단안의 영상에서 Depth를 예측하기 때문에 가상시점 합성 시 더 넓은 시점을 합성 할 수 있다. 또한 기존 방식은 Depth와 합성 영상을 각각 처리해야하지만 제안하는 방식은 한 번에 작업이 이루어지며, GPU를 기반으로 구현하였기 때문에 기존의 합성 방식 보다 처리 속도가 우수하다.

• Korean Journal of Animal Reproduction
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• v.27 no.4
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• pp.275-280
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• 2003

This study was carried out to investigate the effect of cysteamine addition during in vitro maturation, fertilization and culture of porcine oocytes. Oocytes were matured for the first 22 h in mTCM -199 media supplemented with or without 150 $\mu$M cysteamine. They then were matured for an additional 22 h in mTCM-199 media without hormones supplemented with or without 150 $\mu$M cysteamine. When cumulus-oocyte complexes (COCs) were matured in the mTCM-199 media supplemented with cysteamine, the rates of GVBD and maturation (metaphase II) were enhanced as compared to the media without the addition of cysteamine. Also, when COCs were matured in the mTCM-199 media supplemented with cysteamine, the rates of sperm penetration, male pronucleus formation, cleavage and blastocyst formation after in vitro fertilization were enhanced as compared to the media without the addition of cysteamine. In conclusion, it was suggested that oocytes matured for the first 22 h in mTCM-199 media supplemented with 150 $\mu$M cysteamine increased the rates of metaphase II, sperm penetration, male pronucleus and blastocyst formation were higher as compared to the media without addition of cysteamine.

• Journal of electromagnetic engineering and science
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• v.9 no.4
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• pp.188-193
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• 2009

A K-band low-power miniaturized planar-type hyperthermia system was developed to replace massive and expensive equipment. The system consists of a VCO with a buffer amplifier, a high-power amplifier module, a 20-dB-coupled line coupler, a chip circulator and two power detectors for signal generation, amplification and power monitoring. All these components have been implemented in planar form on two module blocks. The total size of the hyperthermia system was less than $10\times6.5\times3\;cm^3$. In order to verify the system performance, ablations were carried out on nude mice xenografted with human breast cancer. Ablation results show performance comparable to the massive components-based system. This work shows the feasibility of a low-cost miniaturized hyperthermia system for practical clinical applications.

• Journal of Distribution Science
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• v.19 no.8
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• pp.37-46
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• 2021

Purpose: This study aims at investigating how high-tech SMEs can enhance innovation performance through the application and distribution of social media strategic capability and whether entrepreneurial orientation moderates the relationship between social media strategic capability and innovation. Research design, data, and methodology: The study followed a deductive approach based on the quantitative design in investigating the proposed relationships. The data was collected using a questionnaire, and the proposed relationships were examined based on a sample of 221 high-tech SMEs through the application of structural equation modeling (SEM). By applying SEM, this study accounted for hidden and unobservable factors as well as reconciled the potential measurement errors. Results: As hypothesized, it was confirmed that social media strategic capability positively influences innovation performance. Besides, the findings supported the moderating effect of three dimensions of entrepreneurial orientation (innovativeness, proactiveness, and risk-taking) toward the relationship between social media strategic capability and innovation performance. Conclusions: According to the results, high-tech SMEs can enhance their innovation performance through social media by distributing and applying social media strategic capability along with entrepreneurial orientation. This study thereby enriches the literature of innovation on high-tech SMEs for implementing social media strategies as well as stimulating future social media research for entrepreneurship.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 2004.11a
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• pp.114-114
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• 2004

• Journal of Technologic Dentistry
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• v.43 no.4
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• pp.145-152
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• 2021

Purpose: This study aimed to produce resin prosthetics using a dental barrel finishing machine. For dental resin grinding, the ingredients of the barrel finishing media were analyzed, and surface residues of the resin were observed. Methods: Two types of barrel finishing media for dental resin grinding were tested. Specimens were made from thermal polymerized, auto polymerized, and photopolymerized resins. Finishing media were analyzed through energy-dispersive X-ray spectroscopy (EDS) component analysis and inductively coupled plasma-optical emission spectrometry (ICP-OES) component analysis. Then, the prepared specimen was barrel finished for 25 minutes using two types of barrel finishing media, and scanning electron microscope was photographed to observe the surface residues. Results: As a result of EDS component analysis, both types of finishing media were analyzed for the components of C, O, Zr and Al elements, and industry media (IM) was further analyzed for the components of Si and Mg elements. In the ICP-OES component analysis, Cd and As, which are harmful elements, were detected in IM, and no harmful elements were detected in manufacturing media (MM). Because of observation of surface residues, no residues were observed in the three types of resin specimens that were barrel finished with two types of finishing media. Conclusion: Surface residue wasn't observed on the specimens polished using two types of finishing media. However, in IM, Cd and As, which are harmful elements, were detected, making it inappropriate for clinical use. In MM, harmful elements were not detected; therefore, clinical use will be possible.

• Korean Journal of Soil Science and Fertilizer
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• v.40 no.3
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• pp.189-195
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• 2007

Using fractal dimensionality theory proposed by Riew and Sposito (1991), we attempted to analyze quantitatively the characteristics of porous distribution for built-in soils in the mini-lysimeter and artificial seed-bed media. The 2" stainless core soil samples were taken from lysimeter soils. Artificial seed-bed media were compacted in the acrylic core filled with raw materials consisted of cocopeat, zeolite and perlite. N (Constant number of partitioned group size smaller media volumes) and r (Self-similarity ratio) parameters consisting of fractal dimension D=log(N)/log(1/r) were obtained by Excel Programme using the Riew and Sposito's fractal model. The pore distribution of tested media was screened in pore size and its occurring frequency. The results reveal that the distribution range of pores is wider in the lysimeter soils than in the seed-bed media, while average size of pores in the media is smaller in lysimeter core soils than in seed-bed media.