• The Bulletin of The Korean Astronomical Society
• /
• v.35 no.1
• /
• pp.38.2-38.2
• /
• 2010

We report the current status of CQUEAN (Camera for QUasars in EArly uNiverse) development. CQUEAN is an optical CCD camera which uses a 1024*1024 pixel deep-depletion CCD. It has an enhanced QE than conventional CCD at wavelength band around 1${\mu}m$, thus it will be an efficient tool for observation of quasars at z > 7. It will be attached to the 2.1m telescope at McDonald Observatory, USA. A telescope interface containing a focal reducer is being designed to secure a larger field of view at the cassegrain focus of 2.1m telescope. Instrument control software will be written with python on linux platform. We are carrying out lab tests to investigate the characteristics of the system components in order to maximize the observational efficiency. Preliminary results of the tests will be presented. CQUEAN is expected to see the first light during summer season of 2010.

• Journal of the Korean Society of Safety
• /
• v.33 no.1
• /
• pp.62-65
• /
• 2018

The rapid progress toward the 4th industrial society has led to possibilities of fire increase. It is pointed out that, though initial fire suppression is emphasized, the current legal systems do not sufficiently recognize the importance of initial fire suppression. In order to resolve this, problems of the current legal systems and regulations, as well as fire-fighting facilities to be equipped according to the size of specific fire-fighting objects, were diagnosed. Also, suggestions for improvement were provided through comparative analysis with relevant laws and technical regulations of Korea and other countries. According to fire safety standards such as NFPA, IMO, ISO, and Russian standards, automatic fire extinguishers are to be installed as per the adaptability criteria of fire extinguishers and automatic fire extinguishers. In Korea, the "Act on Fire Prevention and Installation, Maintenance, and Safety Control of Fire-fighting Systems" cover the types and scope of fire fighting facilities that include specific fire protection objects, such as electric room, power room, and substation room. This study has identified that, in case of a place with a floor area of less than $300m^2$, the installation requirement is not clearly specified. Therefore, in this study, fire extinguishing equipment and automatic fire extinguishing equipment to be added for each sub-use application are proved to have fire extinguishing performance of Class A, Class B, and Class C, respectively. In view of the fact that, in overseas standards, all space except containing such materials as Deep fire, metal fire and peroxide, can be installed with fire fighting equipment, a legal system for specifying the capacity units of fire fighting apparatus by application is, in this study, proposed.

• Journal of the Korean Applied Science and Technology
• /
• v.30 no.2
• /
• pp.215-224
• /
• 2013

Recently, many cosmetic researchers have been focused on the development of high functional cosmetics including anti-wrinkle and whitening. In these studies, they couldn't afford to pay a deep attention to stable encapsulations for unstable materials and efficient drug deliveries for them. Particularly, in order to show a degree of instant effects as cosmetics, they can't also ignore moisturizing effect enough to satisfy customers just after applying and its maintenance by improving the function of skin barrier as well as above two effects. Therefore, skin analogue systems have attracted considerable attention in the view of structural and compositional similarity to intercellular membrane in stratum corneum. And, some models for skin analogue composition were developed to improve the function of skin barrier, stably encapsulate unstable materials such as retinol, vitamin B, C, E, etc., and control their skin penetration in order to show good effects as cosmetics. In this study, we suggest the new skin analogue model having the compositional similarity as well as conventional structural ones. Our skin analogue membrane(SAM) is mainly composed of ceramide/ cholesterol/phosphatidylcholin/fatty acids and its structural defects are compensated by including cholesterol amphiphile and controlling the ratio of ceramide/cholesterol. It was possible to confirm the formation of skin analogue membrane having highly-densed multilamella structure and compare them according to the change of each ratio with a polarized microscope, X-ray diffraction. More detaily, we observed their structures with a electron microscope(TEM). Finally, we dispersed them in excess of continuous water phase, observed the formation of maltese-cross liquid crystalline and measured the efficiency of drug deliveries and moisturizing effects.

• Journal of Physiology & Pathology in Korean Medicine
• /
• v.19 no.3
• /
• pp.590-595
• /
• 2005

The following conclusions are produced by the consideration of Bojungikki-tang(補中益氣湯) from the view point of Hyungsang medicine. A review on the explanation and provisions of Bojungikki-tang stipulated in 'Donguibogam(東醫寶鑑)' results in the idea that the main purpose of Dongwon(東垣) and various application in clinic by Jeesan(芝山) cannot be understood without the deep comprehension of ki(especially Jungki and Wonki) and the fire. Jungki(中氣, the middle warmer ki) is the ki of stomach. Wonki(元氣, the original ki) is a combination of innate Jung(先天之精, Ki stored between the two kidneys) and acquired Jung(後天之精, Ki of the stomach) and the sources of five Jang and six Bu, twelve meridians and triple warmer. Yin fire is referred to the ministerial fire of spleen, liver and kidney. Excess or lack of the ministerial fire can cause a disease and especially the excess of it is harmful to original ki. Deficiency of original ki is thought to be a cause of allergic diseases. Damages on the original ki by the abdominal surgery lead to a disease. Pale complexion, long face and the long limbs are considered as the Hyungsang of deficiency of Jung ki by Jeesan. Clinical cases of Bojungikki-tang in Hyungsang medicine draw the following conclusions ; Bojungikki-tang is usually prescribed to the person who has one of the following Hyungsang : Bangkwang type, pale complexion, long face, short-sight, astigmatism and wrinkles on face. Bojungikki-tang can be applied to the every disease caused by the deficiency of original ki regardless of name and symptoms of disease.

• Journal of the Korean Society of Fisheries and Ocean Technology
• /
• v.27 no.3
• /
• pp.193-210
• /
• 1991

For the deckhouse or superstructure, attention is directed to the reduction of vibration from a human susceptibility point of view. The two basic requirements for obtaining a low vibration level in the accommodation are to ensure that excitation forces from propeller and/or main engine are small and to avoid resonance excitation of the hull and superstructure. In recent years increased attention has been directed towards the problems of vibration and noise in deckhouse, which have caused major problems with regard to the environmental quality in the living quarters for crews. Accordingly, in this paper, the characteristic of the vibration of deckhouse of fishing boat, of which the length/height ratio is also relatively high, are studied systematically with regard to the shape and modelling of deckhouse based on finite element method of 1-dimensional, 2-dimensional and 3-dimensional model. This study is divided into 4-part. 1st part is the global deckhouse vibration, 2nd part is the local deckhouse vibration, 3rd part consists of the estimation for stiffness of foundational support and 4th part is the application to TUNA LONG LINER of 416 ton class. For the global vibration analysis, the severity of the vibration depends on the longitudinal shear and bending stiffness of the deckhouse, on the vertical deckhouse support(fore, aft and sides). However, even if the design is technically sound, vibration problems may arise due to vertical or longitudinal hull girder or afterbody resonances. Author applied the method of this study to the analysis of, deep-sea fishing vessel of G.T. 416 ton class with relatively low height and long deckhouse, and investigated the vibrational characteristic of the fishing vessel with earlier structural feature. According to this investigation, the vibration, response of above vessel was confirmed of which main hull and deckhouse behave as one body. It is at the bottom of vibrational trouble which a accommodation part of the fishing vessel is raised, that is the local vibration for side wall, fore-aft wall and deck plate of deckhouse rather than thief fect of fore-aft vibration of deckhouse for above fishing vessel. and the resonance of main hull, deckhouse and driving system such as the main engine, propeller in exciting source is mainly brought up as the trouble.

• Journal of Korean Society of societal Security
• /
• v.3 no.1
• /
• pp.25-32
• /
• 2010

Detecting rebars in side the concrete structures is one of the important steps in assessing condition of the structure. In order to determine the detection capability of locating rebars inside the concrete, two types of equipments, which use radar system and electromagnetic system each, were tested. Four concrete specimens which have the dimensions of $1,000mm(length){\times}300mm(width)$ with different thickness and diameter of steel bars were applied. A series of testing was achieved after drying in air for 90 days, immersed in water for 3, 24, 48 hour and 28 day. From the experimental outcome, it is shown that error is increased as the diameter of rebar enlarge in case of electromagnetic method. In case of radar method, the detection of embedded rebars in deep is good in the view of reliability. As moisture content increase from 3.6% to 5.5%, the relative permittivity of concrete test specimens show tendency to increase, too. Therefore, it is shown that moisture content is one of the major contributing factors to determine the relative permittivity. And the relative permittivity regression equation is suggested.

• Journal of the Korea institute for structural maintenance and inspection
• /
• v.12 no.4
• /
• pp.179-186
• /
• 2008

Probing inside of concrete structures is one of the important steps in assessing condition of the structure. For the assessment, electromagnetic induction method and electromagnetic wave method are currently applied to the measurement of cover depth, and the detection of reinforcement embedded in concrete. To determine detection capability of locating reinforcement embedded in concrete, commercially available nondestructive testing (NDT) equipments have been tested. The equipments include electromagnetic wave system and electromagnetic induction system. In the tests, nine concrete specimens which have the dimensions of 1,000mm(length))${\times}$300mm(width) with thickness varying from 125mm to 150mm are used. The reinforcement are located at 45, 60, 100mm depth from the concrete surface. Horizontal reinforcement spacing has been set over 100mm. From the outcome, it is shown that error is increased as the diameter of reinforcement enlarge in case of using electromagnetic induction method. In case of using electromagnetic wave method, the detection of reinforcement embedded in deep is good in the view of reliability because of using the relative permittivity on the real cover depth.

• Journal of Technologic Dentistry
• /
• v.21 no.1
• /
• pp.189-208
• /
• 1999

This is a study of view of college life on 1002 students in the dept. of the dental laboratory technology of 8 colleges in the country. Made a question survey on conclusion of college life, such as purpose of entering college and satisfaction, college life and sense of values and relationship to professors and analysed it through statistics. 1. Purpose of entering college and satisfaction of college. Most students motive to enter college was a preparatory step for future job as 73.3% of reponse rate. The dissatisfaction of college after entering was 42.5%, students of the metropolitan area showed 47.1%(p<.01) of response rate and college woman showed 48.2%(p<.05) of response rate. As for the datils of dissatisfaction of college than expected, the absence of romanticism and academic atmosphere was 38.1% and poor practice(facilities) was 32.4%. the students of the metropolitan area showed rater high rate(p<0.1) and sophomore students showed high rate(p<.05) as 40.6% 2. College Life and sense of values. Students showed the greatest interest in employment(27.0%) during attending and in deciding future plan(26.9%) after graduation. They responded a desirable attitude as a college students was a active and autonomous attitude as 34.0%. The best image of a college student was a student helping his/her peers with deep interest as 65.5%. The greatest trouble in college life was still future plan(27.7%). 3. Relationship to professors. Most responded they did not have professors to consult in the department as 72.4%. As a reason for this, insufficient oppartunity to talk with professors was the highest as 29.8%. They wanted any professor with much interest in employment of students as the best image of a professor(40.7%) and wanted to come into close relation with professors(30.9%).

• Journal of the Korean GEO-environmental Society
• /
• v.11 no.3
• /
• pp.43-51
• /
• 2010

In the downstream areas of the Nakdong river, Pusan clays are commonly found and thickness may reach to maximum of 100m. From geological point of view, Pusan clay are characterized as holocene clays, deposited for approximately 20,000 years ago. Recently, there have been many construction projects based on these soft ground areas. It is needed to know clearly soil properties of the areas for design and safety analysis, especially undrained shear strength of soft clays. However, Pusan clay have not been studied systematically because the clay layers are usually very deep, having high sensitivity characteristic. In this study, undisturbed UD samples obtained from the downstream areas of the Nakdong river were researched using laboratory tests (CthUE, CKcUC, CIUC, UU and UC) and in-situ tests (Field Vane, CPTu). The undrained shear strength characteristics of the samples were depicted using stress-strain relationship.

• Journal of the Korean Society of Costume
• /
• v.60 no.9
• /
• pp.1-15
• /
• 2010

Fashion designer Jean Paul Gaultier incorporated his own boundless and unique artistic Into his design of dance costumes, presenting an unobstructed imaginary world that was filled with freedom, which is no less than one would expect from the one-time enfant t${\'{e}}$rrible of Paris fashion. This creativity of Gaultier was made possible only through the fantastic partnership he formed with the French modern dancer, R${\'{e}}$gine Chopinot. Gaultier and Chopinot shared a deep-rooted sympathy that enabled their own artistic worlds to fully mingle and cross over, resulting in a doubled synergy of their talent and their fame. This study analyzed 11 dancing costumes created through the collaborated efforts of those two enfants t${\'{e}}$rribles, one from the fashion industry and the other from the world of dance. The following are the results of my analysis. Gaultier's dance costumes served as a artistic venue for experimenting with a number of creative inspirations lurking in his mind, which were sometimes expressed in pr${\^{e}}$t-${\`{a}}$-porter collections. Instead of the decorative and expressive features of conventional dance costumes, his was the revival of the dancer's persona as a human being, ablaze with individuality and uniqueness. He pointed out that there is no good in the distorted turturro's fixed point of view, and the great joy of an opposing way of thinking that overturned the established. Leotard material was used as a second skin by transforming it into various styles and delivering his message. In addition, obscene and sexual expressions were delivered in a direct narrative. His eccentric ideas provided entertainment while showing his oppositional way of thinking. In the dance, the effect of the costumes was doubled by the use of cumbersome and exaggerated accessories, which is generally forbidden in modern dance.