• 한국산학기술학회논문지
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• 제14권4호
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• pp.1877-1882
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• 2013

스마트 유틸리티 네트워크(SUN)용 무선전송 기술은 에너지 절약 지능형 그린 홈 네트워크 개발의 핵심 요소 기술일 뿐 아니라, 향후 ZigBee 기술을 대체하여 다양한 분야에 활용될 차세대 WPAN 기술이다. SUN 무선 전송 기술은 IEEE 802.15.4g SUN PHY-Layer 표준으로 지하나 반 지하 또는 복잡한 건물 주변과 같은 열악한 전파환경에서도 높은 링크 이득과 안정적인 전송속도의 제공이 가능한 비 면허 무선 전송기술이다. 본 논문은 IEEE 802.15.4g SUN 표준을 만족시키는 RF 송수신기 칩 개발을 위해, RF 송수신기에 대한 시스템 단위 모의실험 환경을 구축하고, 시스템 설계에 필요한 설계 방법, 요구 사양 도출 및 시스템 예상 성능에 대한 내용이다. 또한 상기 시스템 단위 모의실험 결과를 바탕으로 실제 제작한 RF 송수신기 칩의 성능은 IEEE 802.15.4g SUN PHY-Layer 표준의 요구 사양 보다 우수하였다.

• 대한후두음성언어의학회지
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• 제25권2호
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• pp.99-103
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• 2014

A laryngeal web is connective tissue covered with epithelium stretching between both sides of the true vocal cords. Laryngeal webs were first reported by Fleischmann in 1882, and they cause upper airway obstruction and abnormalities of phonation. Congenital webs result from an arrest of reabsorption of the epithelium of the larynx at the tenth week of the fetus. The most common site of webbing is the anterior commissural glottic area, followed by other glottic areas and rarely subglottic or supraglottic areas. We have experienced two cases of congenital laryngeal webs. The webs were operated in two different methods. The first was excised under magnified vision through a laryngoscope, with a silastic keel secured between the raw surfaces of the separated mucosa. In the second case, the deepithelialized surfaces were exposed for a certain time length to mitomycin C to prevent postoperative webbing. We, hereby, report our experience of the diagnosis and management of two cases of a rare entity known as the congenital laryngeal web, and discuss the results with relevant studies.

• 농업과학연구
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• 제45권2호
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• pp.258-264
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• 2018

A study was performed to analyze the biochemical composition (moisture, protein, fat, ash, salt value, iron, calcium and phosphorus) of raw and salted hilsa. Pure (with less than 1% impurities) and clean dry salt was used (fish weight : salt weight = 3 : 1) for salting the hilsa. The nutrients values of the hilsa from two different regions were significantly (p < 0.05) varied. The biochemical compositions were also different before and after the processing of the hilsa. Riverine hilsa contains relatively more moisture ($57.79{\pm}0.51%$) and protein ($15.65{\pm}0.50%$) than marine hilsa. Fat ($16.39{\pm}0.51%$) and salt ($1.80{\pm}0.14%$) contents are higher in marine hilsa; whereas the ash ($7.88{\pm}0.35%$) content was higher in the riverine hilsa. Minerals like iron ($4.92{\pm}0.32mg/100g$) and calcium ($480.02{\pm}6.73mg/100g$) remain in large amounts in the marine hilsa, but the phosphorus ($112.36{\pm}4.40mg/100g$) content remains at a high level in the riverine hilsa. In addition, the protein (raw condition, $18.54{\pm}0.46%$, riverine; $17.12{\pm}0.42%$, marine and salted condition, $32.54{\pm}0.5%$, riverine; $27.31{\pm}0.48%$, marine) and fat (raw condition, $15.41{\pm}0.46%$, riverine; $19.07{\pm}0.51%$, marine and salted condition, $11.58{\pm}0.39%$, riverine; $13.6{\pm}0.55%$, marine) contents were higher in the abdominal region of the riverine and marine hilsa both in the raw and salted conditions than in the head and caudal region.

• 복식
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• 제61권7호
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• pp.35-50
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• 2011

In this study, repression of the body is defined as a restriction on natural developments or movements and a modification either temporarily or permanently of the human body in shape, color, texture and odor. In addition, it involves physical and (or) mental pain. Chinese foot-binding and the Western corset are extreme examples of female body's being repressed in the history of fashion. The analysis of this type of repression will be based on historical research and theoretical concepts such as Darwin's (1809-1882) survival condition, Freud's (1856-1939) renunciation of desire, Weil's (1909-1943) privilege, and Foucault's (1926-1984) L'Usage des Plaisirs(the use of pleasure). Chinese foot-binding symbolically represents ideal beauty, the distinction of an ethnic group, and a desire for improved social status in the struggle for political power. It also represents psychology and a esthetics of eroticism and fetishism that originate from a man's desire and his individual taste. Symbolically, the Western corset represents abundance and fecundity, obedience and devotion to religion, the sanctity of God and ideal beauty as defined by political power. It also represents psychology and aesthetics of eroticism and fetishism as man's desire and a fashion icon. In conclusion, Chinese foot-binding was pursuit of power in male ideology but Western corset was a power struggle between God and mankind.

• KIEE International Transactions on Electrophysics and Applications
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• 제3C권3호
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• pp.106-112
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• 2003

A combined discharge type ozonizer was designed and manufactured. The increase or decrease of temperature greatly influences the characteristics of ozone concentration ( $O_{3con}$), ozone generation ( $O_{3g}$) and ozone yield ( $O_{3Y}$) of a discharge type ozonizer. The characteristics of ozone concentration, ozone generation and ozone yield rate were investigated by varying the gas flow rate (Q), the discharge power ( $W_{d}$) and the temperature (T). At T=25[$^{\circ}C$] the values of $O_{3con}$ were found as 5632, 4200, 2500 and l800[ppm] at Q = 1, 2, 4 and 6[l/min] respectively. At the same temperature the corresponding values of $O_{3g}$ were found as 662, 988, 1176 and l270[mg/h] and those of $O_{3Y}$ were found as 67, 102, 119 and 135[g/kWh] respectively. When the temperature is decreased to -50[$^{\circ}C$], the values of $O_{3con}$ were found as 9000, 6700, 4000 and 2800[ppm] respectively at Q = 1, 2, 4 and 6[l/min]. At the same value of temperature the corresponding values of $O_{3g}$ were found as 1220, 1576, 1882 and 2050[mg/h] and those of $O_{3Y}$ were found as 120, 159, 188 and 202[g/kWh] respectively. Hence as the temperature was decreased from 25 to -50[$^{\circ}C$], the efficiencies of ozone generation were increased by 79, 55, 58 and 49[%] respectively at Q = 1, 2, 4 and 6[l/min].]. 6[l/min].].

• 한국정보통신학회논문지
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• 제12권10호
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• pp.1875-1882
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• 2008

최근 IEEE 802.16 WiMAX에서는 인터넷 기반의 다양한 서비스와 애플리케이션의 빈번한 사용으로 인하여 저비용, 고효율의 특성을 가지는 이동 단말기의 사용이 일반화되고 있다. 이동 단말기의 사용이 일반화되면서 고속 인터넷 서비스의 보안 문제를 해결하기 위한 연구가 IEEE 802.16e 표준을 중심으로 연구되고 있다. 이 논문에서는 IEEE 802.16 WiMAX의 보안 요구사항을 충족하기 위해 IEEE 802.16e 표준에서 제공하는 기본 기능이외에 SS의 인증부하 및 보안공격(reply 공격과 man-in-the-middle 공격)에 안전한 보안 메커니즘을 제안한다. 제안된 메커니즘은 SS와 BS가 생성한 난수와 비밀값을 이용하여 TEK과 데이터 암호에 필요한 키 정보를 교환한다. 또한 SS의 초기 인증정보와 인증서를 이용하여 BS의 추가 인증 과정을 수행하지 않도록 하여 BS의 성능 부하를 줄인다.

• Asian-Australasian Journal of Animal Sciences
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• 제32권12호
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• pp.1882-1888
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• 2019

Objective: An experiment was conducted to evaluate the effects of increasing levels of crude glycerin (0%, 6%, 12%, and 18%) used as a substitute for corn in lamb feed on the quantitative characteristics of the carcass. Methods: A total of 40 crossbred Santa $In{\hat{e}}s$ lambs that were four months old with a mean initial weight of $21.0{\pm}0.8kg$ were randomly distributed in four treatments with ten replicates. The animals were slaughtered after 66 days of confinement. The effects of crude glycerin as a replacement for corn in the diet of the lambs on the carcass characteristics, commercial cut weight and yield and carcass measurements were studied. Results: There was an increasing linear effect for body weight at slaughter with the replacement of corn by crude glycerin. The dry matter and metabolizable energy intakes, weight of the empty body, hot carcass weight and cold carcass weight showed a quadratic effect, with maximum crude glycerin levels estimated at 10.9%, 9.8%, 10.83%, 11.78%, and 11.35%, respectively. The initial pH was not influenced by the replacement of corn for crude glycerin, while the final pH presented a quadratic effect. The other parameters of the carcass and the weights and yields of commercial cuts were not influenced. There was also no effect of the diets on carcass morphometric measurements, except for the thoracic perimeter and the carcass compactness index, which presented quadratic and linear effects, respectively. Conclusion: Crude glycerin can replace up to 18% of corn because it favours muscle tissue deposition without promoting changes in the main carcass characteristics of lambs.

• 임상간호연구
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• 제17권3호
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• pp.307-318
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• 2011

Purpose: This study was to identify topics for evidence-based clinical nursing practice guidelines in Korea. Methods: Data were collected from 330 staff nurses from 10 general hospitals and 53 nurses in charge of nursing education in 110 hospitals with over 500 beds. Using open questions, the nurses identified activities which could not be verified, which lacked consistency among nurses, clinical units and/or hospitals, which were not based on the up-to-date knowledge and which needed reform. The data were analysed by content analysis using a qualitative methodology. Results: Collected data consisted of 1882 clinical topics, which were classified into 50 topics, 207 mid-categories, and 456 sub-categories. The most frequent topics in order of frequency were medications, central line management, intravenous injections, urinary catheterization, perioperative nursing care, skin tests, pressure ulcer care, blood transfusions, laboratory examination-culture, respiratory care which were performed routinely in clinical setting by staff nurses. Conclusion: The research findings indicate the urgent need to develop evidence-based clinical nursing practice guidelines related to these research findings. Further research is needed to identify topics related to health promotion, and symptom/management of health problem.

• 문화기술의 융합
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• 제7권2호
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• pp.129-137
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• 2021

마약한(馬約翰)(1882-1966)은 중국의 근대 중국 복건성에서 태어난 체육 교육가이다. 그는 50년 가까이 중국 최고의 명문대 청화대학(淸華大學) 체육학과 교수로 재직하였다. 그의 업적은 비단 중국 청화대에서 학생들의 건강한 신체를 양성하였다는 차원에 머무르지 않는다. 그는 중국 근현대 과도기의 학교 체육 발전과 교육방법에 새로운 방향을 제시하였고, 당시 중국 근대와 현대를 잇는 주요인물로 성장하는 청화대학의 출신 인재들이 미국유학을 가기 전 단계에서 신체활동에 대한 확신과 자신감을 심어주었다. 마약한(馬約翰) 체육사상의 형성의 기초는 그가 긴 세월 교육받은 성요한 대학과 청화대학 재직시절 집중 유학을 했던 스프링필드 대학에서 형성되었다고 볼 수 있다. 마약한(馬約翰)은 당시 중국사회의 예민한 정치적 상황을 고려하여, 단 한 번도 직접 그의 체육사상을 언급하지는 않았다. 하지만 그의 교육업적과 같이 활동했던 교수과 이들의 업적을 미루어 보건데 때, 마약한(馬約翰)은 강건한 기독교주의와 연관된 YMCA 기독교 체육정신의 영향을 받았고, 이를 대학의 교육현장에서 실천했을 것이라 생각한다.

• 헤리티지:역사와 과학
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• 제47권1호
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• pp.152-163
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• 2014

남원 광한루는 본루, 익루, 월랑 등 세 부분으로 구성된 누각이다. 각 부분이 추가되는 형식으로 증축된 것이라고 알려진 광한루의 건축시기를 조사하기 위해 2001~2002년 수리 공사 중에 교체되는 본루, 익루, 월랑의 목부재와 적심재에 대하여 연륜연대를 측정하였다. 본루의 주두, 도리, 적심, 그리고 익루의 중도리, 귀틀 부재가 1624년 늦가을부터 1626년 초봄사이에 벌채된 것으로 밝혀져 본루와 익루의 건축을 위해 같은 기간에 벌채가 이루어졌음을 알 수 있었다. 이는 익루가 1626년 본루의 중건당시 함께 지어졌다는 증거이다. 1879년에 증축된 것으로 알려진 월랑은 연륜연대 측정결과 1881년~1882년에 본루와 익루의 대규모 수리와 함께 건축된 것으로 해석되었다. 그밖에 본루의 사래와 도리받침, 익루의 추녀가 1855년에 벌채된 것으로 나와 1855년에 중수가 있었다는 역사기록과 일치하였다.