• Journal of Advanced Navigation Technology
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• v.22 no.5
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• pp.456-461
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• 2018

Until the 4th Industrial Revolution fused the Web with diverse technologies, the only factor in evaluating the performance of a Web application was the loading speed of the Web application. Therefore, most existing Web application performance analysis tools focus on the speed at which Web applications run in a Web browser. However, the web is now being used not only in a simple web browser but also in a variety of services. So, in addition to simple speed, there are more elements to be checked to evaluate web applications. Therefore, in this paper, we design a server to perform web application performance analysis considering progressive web app, accessibility, best practice, and search engine optimization as well as the above mentioned speed. Also, we realize a REST API based server that can provide web application performance services without being affected by user's devices or environment.

• Journal of Advanced Navigation Technology
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• v.22 no.5
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• pp.467-471
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• 2018

During the fourth industrial revolution, the amount of data available to users has surged. And it became a stepping stone for various convergence technologies such as ECMA script, WebAssembly, and web of things using web technology. Also, as the amount of data shared on the web increases, the web has emerged as the most influential media in modern life. As a result, web developers have tried to deliver data quickly over the Web. So, various web application analysis tools appeared, and developers tried to find a solution to solve the speed problem by analyzing the web application. However, the performance of web application analysis tools has not improved significantly. Most existing analytical tools require direct installation, require expertise on the Web to perform analysis, and do not have function to analysis new technologies such as WebAssembly. Therefore, in this paper, we propose the design of a new reporting solution that can solve problems of existing web application analysis tool.

• Journal of Korean society of Dental Hygiene
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• v.7 no.3
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• pp.259-271
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• 2007

AIDS is increasing by geometric progression in the world with more seriousness and HIV/AIDS is still spreading. Thus, the study enforced a self-administered survey with 526 dental hygiennics students to carry out an upright recognition and education on AIDS by grasping knowledge and attitude of dental hygienics students who will work at dental hospitals or clinics after graduating in AIDS. As the result, the study got the following conclusion. 1. 51.1% of the students got knowledge on AIDS and the majority out of them got its knowledge through school(35.2%) or mass media(10.8%). 2. The average score of dental hygienics students' knowledge in AIDS was 87.67: The first-grade students(86.00), the second-grade students(88.88) and the third-grade students(88.37) (p=0.000). 3. They had an accurate recognition about AIDS' causes, its infection ways and interceptive methods of its infection way in knowledge of AIDS(p=0.000). 4. In their attitudes for AIDS, the average score was $57.43{\pm}$: The first-grade students(56.19), the second-grade students(57.70) and the third-grade students(58.70)(p=0.001). 5. In their attitudes for AIDS, the students($4.09{\pm}0.82$ scores) responded that they would prepare for AIDS' infection of their families(p=0.004) while, on the other hand, the students($4.06{\pm}0.82$ scores) responded that they wanted to avoid PWA's dental treatment(p=0.001). Therefore, it is judged that vocational education as a specialized worker as well as AIDS education should be realized since it was appeared that they had not enough thought as a mature professional worker. 6. Dental hygienics students who would work at dental hospitals or clinics after graduating were in the environment infected in all diseases and so most of the students($4.23{\pm}0.74$) responded that AIDS education should be included in curriculum.

• Journal of Dairy Science and Biotechnology
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• v.14 no.2
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• pp.229-245
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• 1996

1. CM-Sephadex C-50-120 column을 사용하여 HLF를 효과적으로 정제하였다. CM-Sepha-dex 50-120 column chromatography를 수행한 결과, HLF는 NaCl 350 mM-500 mM 사이에서 용출되었으며, 용출된 분획을 SDS-PAGE를 수행해서 단일 band를 확인하였다. Anti-HLF antibody를 이용한 Western blotting 결과 nitrocellulose paper 상에 단일 band 가 나타나므로 HLF 가 효과적으로 정제되었다는 것을 알 수 있었다. 2. Con A, PWM, PWA LPS 등의 자극원으로 단핵구와 대식세포를 자극한 다음 BLF를처리한 배 양액을 IL-1 bioassy한 결과는 Con A 33%, PMA 33%, PWM 15%, LPS 35% 이고, HLF로 처리하여 IL-1 bioassay를 한 결과는 Con A 15%, PMA 22%, PWM 10%, LPS 5%로 감소된 것으로 나타났다. 3. K-562 세포를 이용한 colony forming assay에서 BLF가 10 g/ml일 때는 30%, 30 g/ml일 때는 35%, HLF는 10 g/ml일 때는 5%,30 g/ml일 때는 30%의 저해를 나타냈다. 4. Lactoferrin의 면역증강효과를 알아보기 위하여 hapten인 VCR-BSA를 투여 한 후, 생성되는 항체생성능력을 ELISA로 비교하였다. 그 결과 HLF 및 BLF 투여군에서 대조군에 비하여 adjuvant 효과를 관찰할 수 있었다. 또한 이때 macrophage 수는 대조군에 비하여 HLF와 BLF를 투여한 군이 증가됨을 알 수 있었다. 이러한 결과로 미루어 볼 때 LF는 macrophage를 활성화 시켜서 항체 생성 능력을 증가시키는 효과가 있음을 관찰할 수 있었다. 5. Balb/c mouse의 thymus로부터 분리한 CD4- CD8- 세포를 BLF로 처리하여 24 시간 배양한 후 CB4$^-$ CD8$^-$ 세포의 분화를 측정한 결과, CD4$^-$를 CD4$^+$ 로 분화하였다. 그리고 HLF로 처리하여 24 시간 배양 후 CD4$^-$ CD8$^-$ 세포의 분화를 측정한 결과, CD4$^-$ CD8$^-$를 CD4$^+$ CD8$^+$ 로 분화하였다. 6. Lactoferrin이 T cell의 IL-2 production에 미치는 영향은 PMA 처리군, PMA+OKT3처리군, LF 단독 처리군 보다 PMA+OKT3+LF를 처리한 군이 IL-2 생성에 영향을 미쳤다. 7. Lfcin B의 단일크론항체에 의해 인식되어지는 Lfcin B의 항원결정기는 ‘QWR’로 밝혀졌다.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.57 no.12
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• pp.2351-2357
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• 2008

Noninvasive radial artery pulse wave has been widely used not only for the pulse wave analysis(PWA) itself but also for assessment of arterial stiffness with estimated aortic pulse wave from peripheral pulse wave. However, it has been found that the deformation of pulse shape can be caused readily by changing measuring position, indentation pressure, and so on. So, in this study, we have developed a system which can measure radial pulse wave and skin displacement simultaneously while the indentation body goes down to occlude subject's radial artery. This system can be divided into a measuring apparatus part, an indentation control hardware part, a data acquisition part and a control and computation part. And, the measuring apparatus consists of an arm-rest, a step motor, an indentation body, a laser displacement sensor(LK-G30, Keyence Co.) and pulse wave sensor. Under load-free condition and radial artery loaded condition, the evaluation of developed system has been performed. From these results, we can conclude: 1) The developed system can control the indentation body quantitatively and the adopted laser displacement sensor shows linear output characteristic even with skin as a reflector. 2) This system can measure the pulse wave and the displacement of indentation body, that is, skin displacement simultaneously at each specific level of indentation body. 3) This system can provide the number of motor steps used to get down the indentation body, the measured skin displacement, the calculated indentation pressure, the calculated pulse pressure and the pulse waveform as well as the information generated by combining these with each others. 4) This system can reveal the relationship between the morphological changes of pulse wave and the estimated displacement of radial artery wall by indentation. Consequently, the developed system can furnish more abundant information on radial artery than previous diagnosis systems based on tonometric measurement. In further study, we expect to setup the standard measuring process and to concrete the algorithm for the estimation of radial artery's diameter and of displacement of radial artery's wall. Furthermore, with well designed clinical studies, we hope to turn out the usefulness of developed system in the field of cardiovascular system evaluation.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.125-132
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• 2019

Because the water exposed to shock waves caused by an underwater explosion cannot withstand the appreciable tension induced by the change in both pressure and velocity, the surrounding water is cavitated. This cavitating water changes the transferring circumstance of the shock loading. Three phenomena contribute to hull-plate damage; initial shock loading and its interaction with the hull plate, local cavitation, and local cavitation closure then shock reloading. Because the main concern of this paper is local cavitation due to a near-field underwater explosion, the water surface and the waves reflected from the sea bottom were not considered. A set of governing equations for the structure and the fluid were derived. A simple one-dimensional infinite plate problem was considered to verify this uncoupled solution approach compared with the analytic solution, which is well known in this area of interest. The uncoupled solution approach herein would be useful for obtaining a relatively high level of accuracy despite its simplicity and high computational efficiency compared to the conventional coupled method. This paper will help improve the understanding of fluid-structure interaction phenomena and provide a schematic explanation of the practical problem.