• The Bulletin of The Korean Astronomical Society
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• v.35 no.2
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• pp.88.1-88.1
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• 2010

세계전파통신회의 (WRC; World Radiocommunication Conference)회의는 국제전기통신연합 (ITU)에서 발행하는 국제 전파법과 관련된 전파규약을 갱신하거나 새로운 법 제정을 위해, 3-4년 간격으로 개최되는 전파통신 관련 회의라고 할 수 있다. WRC-12회의는 2012년 1월 23일 -2월 17일에 걸쳐 스위스 제네바에서 개최되며, 동회의의 원활한 진행을 위하여, 25개의 WRC 의제들에 대한 ITU 산하의 연구반 (ITU-R Study Group) 연구결과들을 기술보고서로 확정하기 위한 회의(CPM-11, Conference Preparatory Meeting)가 2011년 2월 14일-25일에 걸쳐 스위스 제네바에서 역시 개최된다. 이에 한국천문연구원에서는 국가정책의 일환으로 추진되는 달탐사계획의 향후 원활한 자료전송, 자세링크, 명령을 원활히 수행하기 위해, WRC회의에서 최종적인 규정개정에 필요한 CPM기술문서작성과 관련된 ITU-R 연구반 회의에서 주도적인 역할을 수행하고 있다. 따라서 본 발표에서는 2010년 6월 10-18일에 걸쳐 스위스 제네바에서 진행되었던 ITU-R WP7B, 7D 회의에서, 우리나라가 전파천문업무와 관련된 기술문서 개정사항에 대하여 제출하였던 제안결과 및 회의 주요 결과를 소개하고, 전파천문업무 보호 및 22 GHz 대역 달탐사, 38 GHz 대역 Space-VLBI운용대역과 관련된 WRC-12 의제 1.6, 1.11, 1.12 등에 대한 향후 대응방안을 알아보고자 한다.

• The Bulletin of The Korean Astronomical Society
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• v.43 no.1
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• pp.51.1-51.1
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• 2018

동아시아 VLBI 관측망(East-Asian VLBI Network; EAVN)은 한 중 일 각국의 전파망원경을 통합해서 구성되는 동아시아 지역의 새로운 VLBI 네트워크이다. EAVN은 2013년부터 공동이용관측을 실시하고 있는 한일 VLBI 관측망(KaVA)을 중심으로 총 20개 전파망원경을 포함한다. 4개 주파수(6.7/8/22/43 GHz)로 관측할 수 있으며, 최대로 0.6 mas (22 GHz)의 해상도로 관측할 수 있는 기능을 가지고 있다. 우리는 2017년 3월부터 5월까지 EAVN을 이용한 총 17번의 AGN 관측 캠페인을 실시하였다. 이것은 ALMA를 이용한 Event Horizon Telescope (EHT) 관측과 같은 시기에 실시되며, 총 15개의 전파망원경이 참가하였다. 이 관측을 통해서 EAVN으로 얻은 영상이 KaVA의 영상에 대해 80% 정도 성능이 개선되는 것을 확인하였다. 또한, 주된 관측천체인 M87과 Sgr A*의 영상은 과거의 결과를 재현해서 AGN 중심 주변의 sub-pc 스케일의 제트 구조를 보다 자세히 볼 수가 있었다. 이 결과에 의거해서 우리는 KaVA의 관측시간의 일부를 이용해서 2018년 하반기부터 EAVN의 공동이용관측을 시작한다. 공개될 범위는 KaVA, 일본 Nobeyama 45 m, 중국 Tianma 65 m의 총 9개 망원경이며, 중국 Nanshan 26 m 망원경도 Large Program 관측에 한해서 참가한다. 관측주파수는 22 GHz (KaVA + Tianma) 및 43 GHz (KaVA + Tianma + Nobeyama) 이며, 오는 관측시즌(2018년 8월부터 2019년 1월까지)에 제공될 총 관측시간은 100 시간이다. 관측제안서 제출 마감날은 6월 1일이며, 많은 관측제안서가 제출될 것을 기대한다. 이 발표에서는 EAVN AGN 캠페인의 결과 및 EAVN 공동이용 관측의 자세한 내용을 보고한다.

• CELLMED
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• v.10 no.3
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• pp.25.1-25.7
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• 2020

Allergic Rhinitis (AR) is an IgE (immunoglobin-E) mediated inflammatory condition of upper respiratory tract; main clinical features involve runny nose, sneezing, nasal obstruction, itching and watery eyes. AR is a global problem and has large variations in incidences, currently affects up to 20% - 40% of the population worldwide. It may not be a life-threatening disease per se but indisposition from the condition can be severe and has the potential to adversely affect the daily functioning of life. Classical yoga literature indicates that, components of yoga have been used to treat numerous inflammatory conditions including upper respiratory tract. A few yoga intervention studies reported improvement in lung capacity, Nasal air flow and symptoms of allergic rhinitis. This review examined various anti-inflammatory pathways mediated through Yoga that include downregulation of pro-inflammatory cytokines and upregulation of anti-inflammatory cytokines. The hypothalaminic-pitutary-adrenal (HPA) axis and vagal efferent stimulation has been reported to mediate anti-inflammatory effect. A significant reduction is also reported in other inflammatory biomarkers like- TNF-alpha, nuclear factor kappa B (NF-κB), plasma CRP and Cortisol level. Neti, a yogic nasal cleansing technique, reported beneficial effect on AR by direct physical cleansing of thick mucus, allergens, and inflammatory mediator from nasal mucosa resulting in improved ciliary beat frequency. We do not find any study showing effect of yoga on neurogenic inflammation. In summary, Integrated Yoga Therapy may have beneficial effect in reducing symptoms and improving quality of life for patients with allergic rhinitis. Yoga may reduce inflammation through mediating neuro-endocrino-immunological network. Future studies are needed to explore the mechanism how yoga might modulate immune inflammation cascade and neurogenic inflammation at the cellular level in relevance to allergic rhinitis; the effects of kriyas (yogic cleansing techniques) also need to be evaluated in early and late phase of AR. So the proposed model could guide future research.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.8
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• pp.1981-1989
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• 2015

Recently, the development of reliability analysis system for combat system is required, because, necessities of integrated reliability analysis research are emphasized. In this paper, we develop a system which analyzes vulnerabilities for tank(or armored vehicle) based on the fault tree analysis(FTA) technique. The FTA is representative technique of reliability analysis to find cause of fault and calculate probability of fault. To do this, we propose a method to apply FTA technique into domain of vulnerability analysis for tank. Also, we develop the vulnerability analysis system using the proposed method. The system analyzes hit probabilities of components of tank based on multiple shot-lines, and calculates kill probabilities. The analyzed and calculated data support vulnerability analysis of tank.

• The Korean Journal of Mycology
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• v.41 no.2
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• pp.74-80
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• 2013

Fourteen new records of yeasts were screened from one hundred thirty-three yeasts strains which were isolated from wild flowers in east, west and south coast near areas and inland areas, Korea. Candida silvae, Cryptococcus terrestris and Auriculibuller fuscus were newly isolated from wild flowers collected at Donghae and Andong, respectively. Candida quercitrusa, Hanseniaspora opuntiae, Sporobolomyces carnicolor, Candida saopaulonensis and Sporobolomyces phaffii were newly isolated from wild flowers in Geumsan-gun and Taean-gun in Chungcheongnam-do, respectively. Candida oleophila and Jaminaea angkoriensis were newly identified from flowers in Yesan-gun and Hannaella zeae was also newly identified from flowers of Daecheon. Hanseniaspora vineae and two other yeast strains including Pseudozyma hubeiensis were newly isolated and identified from flowers collected at Gwangju and Wando-gun, respectively. Morphological and physiological characteristics of their new recorded yeasts were investigated.

• Journal of the Korean Society of Clothing and Textiles
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• v.19 no.2
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• pp.340-355
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• 1995

purpose of this study was to trace historically the causes of the visual inconsistency of seXual ilT'age in dress with versatile perspectives. For this purpose, theoretical studies about the concepts of sexuality in dress were precceded. To trace the factors of the visual inconsistency of sexual image in dress, historical studies from ancient Egypt to modern ages were done. And then, the factors of the visual inconsist\ulcornerency of sexual image in dress were identified. The synthetic results were as follows; L The visual inconsistency of sexual image in dress shows the phenomena that men introduce the traditional feminine image in dress (ex. X silhouette, skirts), whereas women do the traditional masculine image (ex. Y silhouette, pants), which arouse androgynous image in appearance. And, it also indicates that men or women wear the dress excluded the traditional masculine image as well as the traditional feminine image, which arouse neutral image in appearance. 2. The visual inconsistency of sexual image in dress have been existed historically, from Egypt to modern ages. 3. The visual inconsistency of sexual image III dress was caus~d by various factors as follows; First, ideal beauty of the times which did not distinguish between masculinity and femininity resulted in the visual inconsistency of sexual image in dress. Second, as a means of seeking pleasure, the visual inconsistency of sexual image in dress was used. Third, as a means of expressing ideology, the visual inconsistency of sexual image in dress was selected. Forth,in religious meaning,the visual inconsistency ofl sexual image in dress was appeared. Fifth,popularization of sports and occupational role made woman adopt the masculine image in dress in view of the aspects of functionalism. Sixth,Undevelopment of taloring contributed to generate androgenous image in dress.

• Journal of the Institute of Convergence Signal Processing
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• v.8 no.3
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• pp.178-184
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• 2007

The EEG signal in general can be categorized as the Alpha wave, the Beta wave, the Theta wave, and the Delta wave. The alpha wave, showed in stable state, is the dominant wave for a human EEG and the beta wave displays the excited state. The subject of this paper was to recognize the stable state of EEG quantitatively using wavelet transform and power spectrum analysis. We decomposed EEG signal into the alpha wave and the beta wave in the process of wavelet transform, and calculated each power spectrum of EEG signal, using Fast Fourier Transform. And then we calculated the stable state quantitatively by stable state ratio, defined as the power spectrum of the alpha wave over that of the beta wave. The study showed that it took more than 10 minutes to reach the stable state from the normal activity in 69 % of the subjects, 5 -10 minutes in 9%, and less than 5 minutes in 16 %.

• The Journal of Engineering Geology
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• v.17 no.3
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• pp.367-379
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• 2007

This study intended to evaluate hydrogeological characteristics in relation to subsurface geology data obtained from borehole, groundwater level, borehole flowmeter test, and field hydraulic tests. The regression equation of groundwater level (Y) versus ground elevation (X) is expressed by Y=0.75X-7.00 with quite high correlation coefficient of 0.78. Relationship between groundwater level and thickness of landfill, alluvium, and weathered zone results in higher correlation of groundwater level (Y) versus natural log value of weathered tone (A) than other correlations, with the regression equation Y= exp(9.974A)-14.155. The result of groundwater flow measurement in the boreholes indicates that groundwater flows towards between south and southwest, and this approximately agree with regional distribution of groundwater levels.

• Korean Journal of Food Science and Technology
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• v.31 no.2
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• pp.380-384
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• 1999

For the effective utilization of anchovy as a food source, processing conditions of expanded anchovy snack and monolayer moisture content of the products were investigated. Ground anchovy was mixed with 50% of wheat flour, 2.5% of NaCl and 3.0% of onion. The mixture were rolled, cut, dried and finally deep-fried with soybean oil. When 50% of wheat flour was mixed with ground anchovy, expansion rate showed the highest value among the treatments and organoleptic quality of the product was also high. Dried base with 6.4% of moisture content showed the maximum expansion rate and good crispness and brittleness when fried at $200^{\circ}C$. Monolayer moisture content of the expanded products was calculated as 2.77% by BET equation.

• The Bulletin of The Korean Astronomical Society
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• v.36 no.2
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• pp.134.2-134.2
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• 2011

APT(Asian-Pacific Telecommunity)는 아시아-태평양지역 국가의 공동이익을 도모하기 위하여 결성된 아-태지역 전파협의체 조직으로, WRC(세계전파통신회의)회의에서의 아-태지역 주관청의 공동이익을 얻기 위해 APG(APT Conference Preparatory Group for WRC)회의를 연간 1회의 비율로 개최하고 있다. 2012년의 WRC-12회의에 대비하여 아태지역 회원국의 최종 공동의견서를 작성하기 위해, APG-12 5차회의가 2011년 8월 29일-9월 3일 부산에서 개최되었으며, 전파천문업무 보호 및 22 GHz 대역 달탐사, 38 GHz 대역 Space-VLBI운용대역과 관련된 WRC-12 의제 1.6, 1.11, 1.12 등에 대한 회의가 있었다. 따라서 한국천문연구원에서는 달탐사계획과 관련된 22 GHz 대역에서의 전파천문업무 및 우주연구업무의 원활한 운용을 위해, APG-12 5차회의에 참석하여 WRC-12회의에 제출하기 위한 아-태지역 국가의 공동의견서 작성에 주도적인 역할을 담당하였다. 본 발표에서는 국내의 달탐사계획과 관련되어, APG-12 5차 회의에 제안한 우리나라의 기고서 제안 내용 및 동 회의에서의 최종 아태지역 회원국 공동의견서 결과 및 향후 대응책에 대해서도 알아보고자 한다.